[PHP] Re: Newbie Question about Conditionals
Matty Sarro wrote:
Hey all!
This is probably my second post on the list, so please be gentle. Right now
I am running through the Heads First PHP and MySQL book from O'Reilly.
It's been quite enjoyable so far, but I have some questions about some of
the code they're using in one of the chapters.
Basically the code is retreiving rows from a DB, and I'm just not getting
the explanation of how it works.
Here's the code:
$result=mysqli_query($dbc,$query)
while($row=mysqli_fetch_array($result)){
echo $row['first_name'].' '.$row['last_name'].' : '. $row['email'] . 'br
/';
}
Now, I know what it does, but I don't understand how the conditional
statement in the while loop works. Isn't an assignment operation always
going to result in a true condition? Even if mysqli_fetch_array($result)
returned empty values (or null) wouldn't the actual assignment to $row still
be considered a true statement? I would have sworn that assignment
operations ALWAYS equated to true if used in conditional operations.
Please help explain! :)
Thanks so much!
-Matty
Others have explained in detail, but I will tell you why you and many
beginners may have been confused by this. On this list as well as in
other help sites for PHP, beginners post code that contains something
like this, and wonder why it always echoes TRUE:
$value = 'bob';
if($value = 'test') {
echo 'TRUE';
} else {
echo 'FALSE';
}
They normally get an answer such as: You need to use == for
comparison, = is an assignment operator and the assignment will always
evaluate to true. Well, this is true for this assignment because the
non-empty string 'test' evaluates to true. But without explanation it
may sound as though ANY assignment will evaluate to true just because
the actual assignment itself was successful. This is obviously not the
case. This echoes FALSE:
$value = 'bob';
if($value = '') {
echo 'TRUE';
} else {
echo 'FALSE';
}
--
Thanks!
-Shawn
http://www.spidean.com
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[PHP] Re: newbie question - php parsing
João Cândido de Souza Neto wrote:
You made a mistake in your code:
?php the_title(); ?
must be:
?php echo the_title(); ?
Not necessarily: what if you have
function the_title()
{
echo Title;
}
for example...
In response to Sebastiano:
There would be not much point in using something like PHP if it ignored the if
statements in the code!
What effectively happens in a PHP source file is that all the bits outside of
the ?php ? tags are treated like an echo statement (except that it handles
quotes and stuff nicely)
Your original code:
?php if (the_title('','',FALSE) != 'Home') { ?
h2 class=entry-header?php the_title(); ?/h2
?php } ?
can be read like:
?php
if (the_title('','',FALSE) != 'Home') {
echo 'h2 class=entry-header';
the_title();
echo '/h2';
}
?
You might even find a small (but probably really, really, really small)
performance improvement if you wrote it that way, especially if it was in some
kind of loop.
Note that I prefer to keep HTML separate from PHP as much as possible because it
helps me to read it and helps my editor check my syntax and HTML structure
better...
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Developer fax: 01580 893399
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Re: [PHP] Re: newbie question - php parsing
Thanks, it's now much more clear. I thought that html parts outside
php tags were just dumped to output, no matter of if-else statements
and other conditions. I was *definitely* wrong
2009/7/23 Peter Ford p...@justcroft.com:
In response to Sebastiano:
There would be not much point in using something like PHP if it ignored the
if
statements in the code!
What effectively happens in a PHP source file is that all the bits outside of
the ?php ? tags are treated like an echo statement (except that it handles
quotes and stuff nicely)
Your original code:
?php if (the_title('','',FALSE) != 'Home') { ?
h2 class=entry-header?php the_title(); ?/h2
?php } ?
can be read like:
?php
if (the_title('','',FALSE) != 'Home') {
echo 'h2 class=entry-header';
the_title();
echo '/h2';
}
?
You might even find a small (but probably really, really, really small)
performance improvement if you wrote it that way, especially if it was in some
kind of loop.
Note that I prefer to keep HTML separate from PHP as much as possible because
it
helps me to read it and helps my editor check my syntax and HTML structure
better...
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Developer fax: 01580 893399
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[PHP] Re: newbie question - php parsing
You made a mistake in your code:
?php the_title(); ?
must be:
?php echo the_title(); ?
--
João Cândido de Souza Neto
SIENS SOLUÇÕES EM GESTÃO DE NEGÓCIOS
Fone: (0XX41) 3033-3636 - JS
www.siens.com.br
Sebastiano Pomata lafayett...@gmail.com escreveu na mensagem
news:70fe20d60907221355m3fa49a75ua053d2f1b9aca...@mail.gmail.com...
Hi all,
A little doubt caught me while I was writing this snippet of code for
a wordpress template:
?php if (the_title('','',FALSE) != 'Home') { ?
h2 class=entry-header?php the_title(); ?/h2
?php } ?
I always thought that php was called only between the ?php ? tags,
and I'm pretty sure that's right, while HTML code was simply wrote in
document as is, without further logic.
Now, I can't figure out how this snippet works: I mean, shouldn't HTML
code be simply put on document, as it is outside php invoke?
Effectively if the title of page is 'Home', the HTML part is totally
skipped.
Is the if construct that does all the magic inside?
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Re: [PHP] Re: newbie question - php parsing
2009/7/22 João Cândido de Souza Neto j...@consultorweb.cnt.br
You made a mistake in your code:
?php the_title(); ?
must be:
?php echo the_title(); ?
?= the_title(); ?
also works.
-Shane
--
João Cândido de Souza Neto
SIENS SOLUÇÕES EM GESTÃO DE NEGÓCIOS
Fone: (0XX41) 3033-3636 - JS
www.siens.com.br
Sebastiano Pomata lafayett...@gmail.com escreveu na mensagem
news:70fe20d60907221355m3fa49a75ua053d2f1b9aca...@mail.gmail.com...
Hi all,
A little doubt caught me while I was writing this snippet of code for
a wordpress template:
?php if (the_title('','',FALSE) != 'Home') { ?
h2 class=entry-header?php the_title(); ?/h2
?php } ?
I always thought that php was called only between the ?php ? tags,
and I'm pretty sure that's right, while HTML code was simply wrote in
document as is, without further logic.
Now, I can't figure out how this snippet works: I mean, shouldn't HTML
code be simply put on document, as it is outside php invoke?
Effectively if the title of page is 'Home', the HTML part is totally
skipped.
Is the if construct that does all the magic inside?
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Re: [PHP] Re: newbie question - php parsing
Ted Turner http://www.brainyquote.com/quotes/authors/t/ted_turner.html - Sports is like a war without the killing. 2009/7/23 Shane Hill shanehil...@gmail.com 2009/7/22 João Cândido de Souza Neto j...@consultorweb.cnt.br You made a mistake in your code: ?php the_title(); ? must be: ?php echo the_title(); ? ?= the_title(); ? Short tag and not recommended as its deprecated now, would be void at PHP 6.0
Re: [PHP] Re: newbie question - php parsing
This is how I'd write this snippet
?php
if ( 'Home' !== ( $title = the_title('','',FALSE)))
{
echo 'h2 class=entry-header',
$title,
'/h2';
}
?
On Wed, Jul 22, 2009 at 6:31 PM, Lenin le...@phpxperts.net wrote:
Ted Turner http://www.brainyquote.com/quotes/authors/t/ted_turner.html
-
Sports is like a war without the killing.
2009/7/23 Shane Hill shanehil...@gmail.com
2009/7/22 João Cândido de Souza Neto j...@consultorweb.cnt.br
You made a mistake in your code:
?php the_title(); ?
must be:
?php echo the_title(); ?
?= the_title(); ?
Short tag and not recommended as its deprecated now, would be void at PHP
6.0
--
Martin Scotta
[PHP] Re: newbie question - php parsing
João Cândido de Souza Neto wrote: You made a mistake in your code: ?php the_title(); ? must be: ?php echo the_title(); ? I haven't used worpress in a long time, but the the_title() function might echo the title unless you pass the FALSE parameter, in which case it just returns it. -- Thanks! -Shawn http://www.spidean.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: Newbie Question - Form To Email Needed
1st page:
form
textarea name='thebody'/texarea
/form
2nd page:
$str_body = $_POST['thebody'];
mail('[EMAIL PROTECTED]', 'This is the
subject', $str_body);
Of course you can have the email and the subject fields come also from the
1st page.
Hope that helps!
--
itoctopus - http://www.itoctopus.com
revDAVE [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Hi folks,
I have a form on page one - and would like to submit to a second page in
PHP
that could grab the fields and send it out as an e-mail.
Are there any links that show how do this?
Thanks in advance - Dave
--
Thanks - RevDave
[EMAIL PROTECTED]
[db-lists]
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Re: [PHP] Re: newbie question about storing big5 codes into mysql-5.0.24a
Man-wai Chang wrote: create table temp ( big5 char(2) ) character set big5 collate big5_bin; insert into temp ( big5 ) values ( 0x9f54 ); insert into temp ( big5 ) values ( 0x9f53 ); The 2nd query will report duplicated key. How should I fix the problem? What does this has to do with PHP? First of all I don't see any PHP code, and second this is an error in your SQL query, so you should be on the MySQL list. I used mysqli_query() to send the SQL. How could I make it work? That really doesn't make this question PHP-related. You really do need to ask on a MySQL mailing list. This has nothing to do with PHP, and you're more likely to get a useful answer from a MySQL-specific list. If you really want to try and justify asking this question here, try the queries in the command-line MySQL client. If it works there but not through mysqli_query() then you might have a case for asking here. -Stut -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: newbie question about storing big5 codes into mysql-5.0.24a
queries in the command-line MySQL client. If it works there but not through mysqli_query() then you might have a case for asking here. For the 13081 chinese alphabets I tried, only 1 one failed, and it's 0x9f54. mysqli_query() should have escaped the string for me. So ... I suppose most PHP programmers are also experts in MySQL (they are basically tied). SO I tried my luck here. :) -- .~. Might, Courage, Vision, SINCERITY. http://www.linux-sxs.org / v \ Simplicity is Beauty! May the Force and Farce be with you! /( _ )\ (Ubuntu 6.10) Linux 2.6.20.4 ^ ^ 21:24:01 up 1 day 8:36 0 users load average: 1.00 1.02 1.00 news://news.3home.net news://news.hkpcug.org news://news.newsgroup.com.hk -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Re: newbie question about storing big5 codes into mysql-5.0.24a
Man-wai Chang wrote: queries in the command-line MySQL client. If it works there but not through mysqli_query() then you might have a case for asking here. For the 13081 chinese alphabets I tried, only 1 one failed, and it's 0x9f54. mysqli_query() should have escaped the string for me. mysqli_query() doesn't escape anything for you - your assumption that it *should* is WRONG. try this: http://php.net/manual/en/function.mysqli-real-escape-string.php So ... I suppose most PHP programmers are also experts in MySQL (they are basically tied). incorrect supposition. most php programmers have experience using RDBMs because of the dynamic nature of the websystems they build. mysql and php and not tied at all .. they just happen to be used together frequently. SO I tried my luck here. :) -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: newbie question about storing big5 codes into mysql-5.0.24a
create table temp ( big5 char(2) ) character set big5 collate big5_bin; insert into temp ( big5 ) values ( 0x9f54 ); insert into temp ( big5 ) values ( 0x9f53 ); The 2nd query will report duplicated key. How should I fix the problem? What does this has to do with PHP? First of all I don't see any PHP code, and second this is an error in your SQL query, so you should be on the MySQL list. I used mysqli_query() to send the SQL. How could I make it work? -- .~. Might, Courage, Vision, SINCERITY. http://www.linux-sxs.org / v \ Simplicity is Beauty! May the Force and Farce be with you! /( _ )\ (Ubuntu 6.10) Linux 2.6.20.4 ^ ^ 14:43:01 up 1 day 1:55 0 users load average: 1.01 1.02 1.00 news://news.3home.net news://news.hkpcug.org news://news.newsgroup.com.hk -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: newbie question
Means you're passing the variable as reference.
This means that any change in the variable inside your function will affect
the variable outside your function, in other terms:
if you have
function myfunc($var){
$var = 5;
}
$a = 6;
myfunc($a);
will result in having $a=5 after the function all.
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bob pilly [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Hi all
Can anyone tell me what '' means before a var?
e.g function($var)
Thanks for any help in advance
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Re: [PHP] Re: Newbie question about ?= ?
Satyam wrote:
for ($x=0;$x1000;$x++) {
echo ' trtdX is ' , $x , '/td/tr';
}
This seems to be a hair faster. I extended the test to 1 requests
(still concurrency 10) to make the test a little more reproducible:
echo str,var,str did 604.65 requests a second where trtd?= $x
?/td/tr did 599.63 requests a second. I also tried echo str . var .
str, and it came in at about 584.55 requests a second. printf(str %i
str,var) came out at 547.01 requests a second and printf(str %s
str,var) was only 452.03 requests a second.
Can you try and time that one so we have comparable results? This one
should be second best:
for ($x=0;$x1000;$x++) {
echo trtdX is $x/td/tr;
}
Approximately 330 (?!) requests a second for that one.
Back again to what would be 'longer', well, in your example, the whole
header, up to the loop itself should be faster if sent out of PHP.
Likewise, you could echo $buffer right after the loop, drop out of PHP
and send the footer as plain HTML. This, of course, is harder to time
since it happens only once. I admit though that I did time the
options I listed and on the 'dropping in and out of PHP' I'm relying
on the PHP manual ( see
http://www.php.net/manual/en/language.basic-syntax.php, the first
paragraph after the examples) and the source of the lexical scanner,
which supports that, though your numbers do contradict it. Interesting.
I'm not sure that my results would count as contradictory - I'm running
APC which would likely throw performance related numbers out of whack as
compared to out-of-the-box PHP.
Because of that, I wouldn't recommend anyone take my numbers too
seriously - they're just an example taken from my server: 1.8 GHz
SMP/1G/RAID5/Linux 2.6.17.7/Apache 2.2.3/PHP 5.1.6/APC 3.0.12p2. Anyone
else's results would probably vary widely.
jon
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Re: [PHP] Re: Newbie question about ?= ?
How bored am I? This bored: http://dev.stut.net/phpspeed/ Server is running PHP 5.1.2 (really should upgrade that) with no caches of any sort. -Stut -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Re: Newbie question about ?= ?
At 4:56 PM +0100 9/11/06, Stut wrote: How bored am I? This bored: http://dev.stut.net/phpspeed/ Server is running PHP 5.1.2 (really should upgrade that) with no caches of any sort. -Stut Which begs the question, does it make much of a difference? (not you being bored, but the rather speed concers). With all the things out there that can slow your browsers reaction time in presenting some result, does a couple of seconds count much in the over all scheme of things? I know, purest will say that they want to make whatever they do as fast as possible, but is that time to make it faster be better spent elsewhere? We used to have to worry about the size of our strings, but now we can place the kjv of the bible in one. So, what's the point of counting characters in strings now? I suspect at some point, probably soon, speed isn't going to matter much. Opinions? tedd -- --- http://sperling.com http://ancientstones.com http://earthstones.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Re: Newbie question about ?= ?
I admit I'm totally surprised about the buffered results. Nevertheless, may
I sugest you add the following to the series of tests?:
h3Using line-by-line single-quoted echobr/with comma separated
arguments/h3
?php
$start = mt();
print 'table style=display:none; id=table2a';
for ($x = 0; $x $iterations; $x++)
{
echo 'trtdX is/tdtd',$x,'/td/tr';
}
print '/table';
$duration = mt() - $start;
print 'pTook '.number_format($duration, 4).' seconds/p';
?
praquo; a id=table2alink
href=#
onclick=document.getElementById('table2a').style.display='block';
document.getElementById('table2alink').style.display='none';return
false;
Reveal output/a/p
There seems to be one thing rarely anybody remembers, echo admits multiple
arguments, and as the numbers will show, (or at least they do in my
machine), they are the second best option.
Satyam
- Original Message -
From: Stut [EMAIL PROTECTED]
To: Jon Anderson [EMAIL PROTECTED]
Cc: Satyam [EMAIL PROTECTED]; php-general@lists.php.net
Sent: Monday, September 11, 2006 5:56 PM
Subject: Re: [PHP] Re: Newbie question about ?= ?
How bored am I?
This bored: http://dev.stut.net/phpspeed/
Server is running PHP 5.1.2 (really should upgrade that) with no caches of
any sort.
-Stut
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Re: [PHP] Re: Newbie question about ?= ?
Satyam wrote: I admit I'm totally surprised about the buffered results. Nevertheless, may I sugest you add the following to the series of tests?: h3Using line-by-line single-quoted echobr/with comma separated arguments/h3 snip There seems to be one thing rarely anybody remembers, echo admits multiple arguments, and as the numbers will show, (or at least they do in my machine), they are the second best option. Done, but again it doesn't seem to make any significant difference to the performance. -Stut -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Re: Newbie question about ?= ?
tedd wrote: At 4:56 PM +0100 9/11/06, Stut wrote: How bored am I? This bored: http://dev.stut.net/phpspeed/ Server is running PHP 5.1.2 (really should upgrade that) with no caches of any sort. -Stut Which begs the question, does it make much of a difference? (not you being bored, but the rather speed concers). With all the things out there that can slow your browsers reaction time in presenting some result, does a couple of seconds count much in the over all scheme of things? I know, purest will say that they want to make whatever they do as fast as possible, but is that time to make it faster be better spent elsewhere? We used to have to worry about the size of our strings, but now we can place the kjv of the bible in one. So, what's the point of counting characters in strings now? I suspect at some point, probably soon, speed isn't going to matter much. Opinions? I would have to agree. Having watched the server CPU load while playing with this test script it would appear that the performance can be skewed a lot more by that than by the method you use for squidging out the output. As a curiosity I've also added a test using ?php print $x; ? and bizarrely that appears to be slightly faster than ?=$x?. Weird. -Stut -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Re: Newbie question about ?= ?
Jon Anderson wrote: Stut wrote: How bored am I? This bored: http://dev.stut.net/phpspeed/ Server is running PHP 5.1.2 (really should upgrade that) with no caches of any sort. Just looking through the source, could you try changing the first example to put the output all on one line? It's the only one that does the row output on multiple indented lines - I'm kind of curious what effect (if any) that has on the results. Done. Doesn't seem to make a difference - I didn't expect it to. I also tried this on my own server. With the opcode cache, the results seem to be the inverse of yours without. I would have been surprised if an opcode cache had made a huge difference. I don't think the Zend Engine is intelligent enough to compile the various different tests to the same set of opcodes - but I could be wrong. I'm still quite new to the PHP internals. Also, with either server, the first three results seem to vary wildly, but the last two always seem to come out the same. I'm not sure why that is... As I said in another post, the performance varies wildly with the load on the server. -Stut -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Re: Newbie question about ?= ?
- Original Message - From: Stut [EMAIL PROTECTED] To: Satyam [EMAIL PROTECTED] Cc: php-general@lists.php.net Sent: Monday, September 11, 2006 6:32 PM Subject: Re: [PHP] Re: Newbie question about ?= ? Satyam wrote: I admit I'm totally surprised about the buffered results. Nevertheless, may I sugest you add the following to the series of tests?: h3Using line-by-line single-quoted echobr/with comma separated arguments/h3 snip There seems to be one thing rarely anybody remembers, echo admits multiple arguments, and as the numbers will show, (or at least they do in my machine), they are the second best option. Done, but again it doesn't seem to make any significant difference to the performance. -Stut When I run those tests locally, the numbers are totally different and the performance of one over the other comes out far clearer. I can only assume that the numbers in the test run in a remote server are so much influenced by the ability of the server to push out the characters into the output stream that the processing time itself is of very little relevance. This table shows the numbers for the different tests as run on my machine, locally (where output streaming is irrelevant) and run from your site: Using ?=$x?Took 0.2801 secondsTook 3.5937 seconds Using ?php print $x; ?Took 0.3286 secondsTook 5.2654 seconds Using line-by-line single-quoted print:Took 0.1215 secondsTook 3.2256 seconds Using line-by-line single-quoted echo with comma separated argumentsTook 0.2542 secondsTook 3.2220 seconds Using line-by-line double-quoted print Took 0.1782 secondsTook 3.3129 seconds Using buffered single-quoted printTook 0.0277 secondsTook 3.3077 seconds Using buffered double-quoted printTook 0.2038 seconds Took 3.3012 seconds It would seem that it takes about 3 seconds to push those bytes into the network, the actual processing times get completely masked behind a simple glitch in the throughput of the communication line. While the differences on the rightmost column (except for the second one, which is way off) are no more than 5%, in the middle column the differences are up to 10 to 1. But then there is that second row, which is so much higher and it is so in both columns. Unfortunately, I cannot make much sense about all this. I don't get it. Nevertheless, something it is clear is that buffering all the output first and then pushing it out all at once seems to beat them all, specially using single quoted strings. Run locally, the differences are amazing! Satyam -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Re: Newbie question about ?= ?
At 5:36 PM +0100 9/11/06, Stut wrote: tedd wrote: Opinions? I would have to agree. Having watched the server CPU load while playing with this test script it would appear that the performance can be skewed a lot more by that than by the method you use for squidging out the output. As a curiosity I've also added a test using ?php print $x; ? and bizarrely that appears to be slightly faster than ?=$x?. Weird. My guess would be that it's in the interpreter -- the look-up for ? as compared to ?php may be delayed because of checking for the short-tag option-on, or something similar. But, I admittedly don't know. However, I strongly suspect that drawing to the screen will take longer than executing any = or print statement anyway. So regardless of the time saved in computation, the delivery would appear identical. It reminds me of the hurry-up and wait saying we had in the Army some 50 years back. tedd -- --- http://sperling.com http://ancientstones.com http://earthstones.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: Newbie question about ?= ?
Mike Borrelli wrote: Good day, While I've been using php for more than a little while now, I've never understood why the use of the ?= ...? short tag is noted to be avoided. Or rather, I understand that there's an option to disable it, and that's why it's noted in this way, but I don't understand why it's disabled? What's gained by writing ?php echo some_function(); ? over ?= some_function(); ? Thanks in advance. Cheers, Mike Structurally, there is a far better way to compile your html pages. This approach is easier to design and debug and it is faster since it sends one complete packet instead of one for every short tag. And, it saves using ob_start() and ob_flush(). Consider: $report= ''; $report .= function() [or whatever] . repeat as necessary to assemble your complete page. Then simply echo $report; -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Re: Newbie question about ?= ?
- Original Message - From: Al [EMAIL PROTECTED] To: php-general@lists.php.net Sent: Sunday, September 10, 2006 5:52 PM Subject: [PHP] Re: Newbie question about ?= ? Mike Borrelli wrote: Good day, While I've been using php for more than a little while now, I've never understood why the use of the ?= ...? short tag is noted to be avoided. Or rather, I understand that there's an option to disable it, and that's why it's noted in this way, but I don't understand why it's disabled? What's gained by writing ?php echo some_function(); ? over ?= some_function(); ? Thanks in advance. Cheers, Mike Structurally, there is a far better way to compile your html pages. This approach is easier to design and debug and it is faster since it sends one complete packet instead of one for every short tag. And, it saves using ob_start() and ob_flush(). Consider: $report= ''; $report .= function() [or whatever] . repeat as necessary to assemble your complete page. Then simply echo $report; Actually, in my experience, that is not the case, my e-mail from more than a year ago must be somewhere there in the archives, but what you sugest is not the fastest. The fastest is to escape out of php (with a ? ) for the longer invariable parts of immutable HTML. Stepping out from PHP and in again is handled by the lexical scanner, it doesn't even reach the parser level so, for all effects, the PHP interpreter is basically frozen at the point before the ? was found. For the sake of completeness, the ? is translated as a ; for the parser so it ends any statement that could have been left open, but it does not bother the parser at all for all the rest of the characters found until a ?php tag (or equivalent) is found. If the lexer didn't issue a ; for a ?, the following code would be valid: echo 'This ' , ? is ?php 'not valid'; For the variable parts, the best is to issue as little echos as possible with its arguments separated by commas, not with dots. Most people don't realize that echo taks a list of arguments, a list separated by commas. Thus, in the ratings, from best to worst, it goes: echo 'p' , $something, '/p'; echo p$something/p echo 'p' . $something . '/p'; echo 'p'; echo $something; echo '/p'; The reason for this is that generating a single string either from variable interpolation as in the second case or by concatenating the arguments, as in the third, requires a lot of memory handling for the strings and its intermediate and final results. Some of it might be delayed until the page is served so the time the garbage collector takes to clean it up might not be fully reflected in the processing time of a single page, but it does affect the overall throughput of the server. Notice also that I have used single quotes whenever possible, which is slightly faster since the parser has much less to look for within it. Finally, the first option is the fastest just as a C++ iostream or a Java StringBuffer are faster than plain strings: since you know you will only append to the end of them, the characters echoed go into a much more efficient character buffer instead of a more complex string which has to be available for all sorts of string operations. Satyam -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Re: Newbie question about ?= ?
Al wrote:
Structurally, there is a far better way to compile your html pages.
This approach is easier to design and debug and it is faster since it
sends one complete packet instead of one for every short tag. And, it
saves using ob_start() and ob_flush().
Consider:
$report= '';
$report .= function() [or whatever]
. repeat as necessary to assemble your complete page.
Then simply
echo $report;
I thought I'd look into this, because I'm a bit of a performance nut - I
like my code to run as fast as possible at all times. I wrote up a
quick buffer v.s. direct benchmark for this, and the winner is clear:
direct output is much faster. (If my example below isn't what you
meant, please let me know. I'm always happy to hear new ways to
improve my code.)
Best of 3 runs with apache bench (concurrency 10, 1000 requests total):
Direct output: 582 requests a second
Buffer var: 286 requests a second
I believe the margin would get wider with real-world usage, as the
buffer variable would increase in size. My test code is copied below.
jon
--- Direct output: testecho.php ---
html
head
style type=text/wastespacetosimulateastylesheet
style1 {
a = 1;
b = 2;
c = 3;
d = 4;
e = 5;
f = 6;
}
style2 {
a = 1;
b = 2;
c = 3;
d = 4;
e = 5;
f = 6;
}
style3 {
a = 1;
b = 2;
c = 3;
d = 4;
e = 5;
f = 6;
}
style4 {
a = 1;
b = 2;
c = 3;
d = 4;
e = 5;
f = 6;
}
/style
/head
bodytable
?php for ($x=0;$x1000;$x++) { ?
trtdX is ?= $x ?/td/tr
?php } ?
/table/body
/html
--- Buffered output: testbuffer.php ---
?php
$buffer = '
html
head
style type=text/wastespacetosimulateastylesheet
style1 {
a = 1;
b = 2;
c = 3;
d = 4;
e = 5;
f = 6;
}
style2 {
a = 1;
b = 2;
c = 3;
d = 4;
e = 5;
f = 6;
}
style3 {
a = 1;
b = 2;
c = 3;
d = 4;
e = 5;
f = 6;
}
style4 {
a = 1;
b = 2;
c = 3;
d = 4;
e = 5;
f = 6;
}
/style
/head
bodytable';
for ($x=0;$x1000;$x++) {
$buffer .= trtdX is $x/td/tr;
}
$buffer .= '/table/body
/html';
echo $buffer;
?
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Re: [PHP] Re: Newbie question about ?= ?
- Original Message -
From: Jon Anderson [EMAIL PROTECTED]
To: php-general@lists.php.net
Cc: Al [EMAIL PROTECTED]
Sent: Sunday, September 10, 2006 9:16 PM
Subject: Re: [PHP] Re: Newbie question about ?= ?
Al wrote:
Structurally, there is a far better way to compile your html pages. This
approach is easier to design and debug and it is faster since it sends
one complete packet instead of one for every short tag. And, it saves
using ob_start() and ob_flush().
Consider:
$report= '';
$report .= function() [or whatever]
. repeat as necessary to assemble your complete page.
Then simply
echo $report;
I thought I'd look into this, because I'm a bit of a performance nut - I
like my code to run as fast as possible at all times. I wrote up a quick
buffer v.s. direct benchmark for this, and the winner is clear: direct
output is much faster. (If my example below isn't what you meant, please
let me know. I'm always happy to hear new ways to improve my code.)
Best of 3 runs with apache bench (concurrency 10, 1000 requests total):
Direct output: 582 requests a second
Buffer var: 286 requests a second
I believe the margin would get wider with real-world usage, as the buffer
variable would increase in size. My test code is copied below.
jon
--- Direct output: testecho.php ---
html
head
style type=text/wastespacetosimulateastylesheet
style1 {
a = 1;
b = 2;
c = 3;
d = 4;
e = 5;
f = 6;
}
style2 {
a = 1;
b = 2;
c = 3;
d = 4;
e = 5;
f = 6;
}
style3 {
a = 1;
b = 2;
c = 3;
d = 4;
e = 5;
f = 6;
}
style4 {
a = 1;
b = 2;
c = 3;
d = 4;
e = 5;
f = 6;
}
/style
/head
bodytable
?php for ($x=0;$x1000;$x++) { ?
trtdX is ?= $x ?/td/tr
?php } ?
/table/body
/html
--- Buffered output: testbuffer.php ---
?php
$buffer = '
html
head
style type=text/wastespacetosimulateastylesheet
style1 {
a = 1;
b = 2;
c = 3;
d = 4;
e = 5;
f = 6;
}
style2 {
a = 1;
b = 2;
c = 3;
d = 4;
e = 5;
f = 6;
}
style3 {
a = 1;
b = 2;
c = 3;
d = 4;
e = 5;
f = 6;
}
style4 {
a = 1;
b = 2;
c = 3;
d = 4;
e = 5;
f = 6;
}
/style
/head
bodytable';
for ($x=0;$x1000;$x++) {
$buffer .= trtdX is $x/td/tr;
}
$buffer .= '/table/body
/html';
echo $buffer;
?
--
In my message I was careful to mention that stepping in and out of PHP was
good 'for the longer invariable parts of immutable HTML'. What could be
considered 'longer' is certainly a matter discussion, your results prove
that this is not long enough. Notice that when the parser finds the '?=',
it converts it into the equivalent of ? echo, thus, though the echo is
not explicitly there, from the parser on is as if it were. Then, since you
have an echo, why not use it for all of the output?The equivalent to
what I showed as the second best, which would be the first best with
'shorter' strings would be the following:
for ($x=0;$x1000;$x++) {
echo ' trtdX is ' , $x , '/td/tr';
}
Can you try and time that one so we have comparable results? This one
should be second best:
for ($x=0;$x1000;$x++) {
echo trtdX is $x/td/tr;
}
Back again to what would be 'longer', well, in your example, the whole
header, up to the loop itself should be faster if sent out of PHP.
Likewise, you could echo $buffer right after the loop, drop out of PHP and
send the footer as plain HTML. This, of course, is harder to time since it
happens only once. I admit though that I did time the options I listed and
on the 'dropping in and out of PHP' I'm relying on the PHP manual ( see
http://www.php.net/manual/en/language.basic-syntax.php, the first paragraph
after the examples) and the source of the lexical scanner, which supports
that, though your numbers do contradict it. Interesting.
Satyam
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[PHP] Re: Newbie Question Can't insert values into MySQL DB via PHP
Duggles Temple wrote:
Hi,
I'd like to say in advance that I am sorry about the silly and very newbie
question I'm asking.
I am having a problem with a shop system. I can't add values into the MySQL
DB via a PHP statement. The values are being transferred from one page to
another (know that from the echo statement), but the SQL statement isn't
working.
What error do you get?
The statement is as follows:
$conn = mysql_connect($DBhost,$DBuser,$DBpass) or die('Unable to connect to
database');
$t = $_GET['newdvdtitle'];
$y = $_GET['newdvdyear'];
$c = $_GET['newdvdcost'];
$p = $_GET['newdvdpurchased'];
@mysql_select_db($DBName) or die(Unable to select database $DBName);
$sqladd = INSERT INTO 'dvd' ('id', 'title', 'year','cost','purchased')
VALUES ( NULL , '$t', '$y', '$c' , '$p' );
echo $sqladd;
$result = mysql_query($sqladd);
Insert Into dvd (title, year,cost,purchased)
When the id is auto_increment you dont have to add it to the query.
Barry
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RE: [PHP] Re: Newbie Question Can't insert values into MySQL DB via PHP
Also when specifying the field list (and table name) it may be a better idea
to wrap the values in backticks (`) rather than quotes (')
Always works for me
Dan
-Original Message-
From: Barry [mailto:[EMAIL PROTECTED]
Sent: 10 February 2006 10:31
To: php-general@lists.php.net
Subject: [PHP] Re: Newbie Question Can't insert values into MySQL DB via
PHP
Duggles Temple wrote:
Hi,
I'd like to say in advance that I am sorry about the silly and very newbie
question I'm asking.
I am having a problem with a shop system. I can't add values into the
MySQL
DB via a PHP statement. The values are being transferred from one page to
another (know that from the echo statement), but the SQL statement isn't
working.
What error do you get?
The statement is as follows:
$conn = mysql_connect($DBhost,$DBuser,$DBpass) or die('Unable to connect
to
database');
$t = $_GET['newdvdtitle'];
$y = $_GET['newdvdyear'];
$c = $_GET['newdvdcost'];
$p = $_GET['newdvdpurchased'];
@mysql_select_db($DBName) or die(Unable to select database $DBName);
$sqladd = INSERT INTO 'dvd' ('id', 'title', 'year','cost','purchased')
VALUES ( NULL , '$t', '$y', '$c' , '$p' );
echo $sqladd;
$result = mysql_query($sqladd);
Insert Into dvd (title, year,cost,purchased)
When the id is auto_increment you dont have to add it to the query.
Barry
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[PHP] Re: Newbie question
try, ?PHP header(Location: Page_here); ? www.BradTechnologies.com 99.9% Uptime 24/7 FREE Support Plans starting at $3.50 per month www.BradTechnologies.com Pascal Platteeuw [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Hello everyone, Here is a newbie question for you guys who are much more advanced than me :-) I want ot do an automatic redirection in a php page... Is there something equivalent to response.redirect used in ASP? Thanks in advance, Pascal Platteeuw -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: Newbie question about operators
Thanks Ligaya
Ligaya Turmelle [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
it is refering to the associative array, specifically the $key = $value .
Note here (http://www.php.net/manual/en/language.types.array.php).
Respectfully,
Ligaya Turmelle
Gabe [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Looking at the code below, what exactly is happening with the
$name=$value
part? I looked in the PHP online documentation and I can't find that
operator. What is it doing exactly and what is it called?
foreach ($some_array as $name=$value)
{
... some code ...
}
Thanks alot!
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[PHP] Re: Newbie question about operators
it is refering to the associative array, specifically the $key = $value .
Note here (http://www.php.net/manual/en/language.types.array.php).
Respectfully,
Ligaya Turmelle
Gabe [EMAIL PROTECTED] wrote in message
news:[EMAIL PROTECTED]
Looking at the code below, what exactly is happening with the
$name=$value
part? I looked in the PHP online documentation and I can't find that
operator. What is it doing exactly and what is it called?
foreach ($some_array as $name=$value)
{
... some code ...
}
Thanks alot!
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[PHP] Re: Newbie question on arrays
you need to declare your $monthname var as global, now you can use it!
function show_lang_date($timestamp, $country)
{
GLOBAL $monthname;
$date = getdate($timestamp);
echo mday = . $date['mday'] . ;
echo country = $country ;
$mon = $date[mon];
echo mon = . $mon . ;
echo $monthname[$country][$mon];
echo \n;
}
Willem Van Der Scheun [EMAIL PROTECTED] schrieb im Newsbeitrag
news:[EMAIL PROTECTED]
Hi,
I've written the piece of code below and I do not get any output out of the
2 dimensional array. I do not see what's wrong. Must be something obvious I
guess.
?php
$monthname[NL][1] = Januari;
$monthname[NL][2] = Februari;
$monthname[NL][3] = Maart;
$monthname[NL][4] = April;
$monthname[NL][5] = Mei;
$monthname[NL][6] = Juni;
$monthname[NL][7] = Juli;
$monthname[NL][8] = Augustus;
$monthname[NL][9] = September;
$monthname[NL][10] = Oktober;
$monthname[NL][11] = November;
$monthname[NL][12] = December;
$monthname[BR][1] = Janeiro;
$monthname[BR][2] = Fevreiro;
$monthname[BR][3] = Março;
$monthname[BR][4] = Abril;
$monthname[BR][5] = Maio;
$monthname[BR][6] = Junho;
$monthname[BR][7] = Julho;
$monthname[BR][8] = Augosto;
$monthname[BR][9] = Setembro;
$monthname[BR][10] = Outobro;
$monthname[BR][11] = Novembro;
$monthname[BR][12] = Decembro;
$monthname[EN][1] = January;
$monthname[EN][2] = February;
$monthname[EN][3] = March;
$monthname[EN][4] = April;
$monthname[EN][5] = May;
$monthname[EN][6] = June;
$monthname[EN][7] = July;
$monthname[EN][8] = August;
$monthname[EN][9] = September;
$monthname[EN][10] = October;
$monthname[EN][11] = November;
$monthname[EN][12] = December;
function show_lang_date($timestamp, $country)
{
$date = getdate($timestamp);
echo mday = . $date['mday'] . ;
echo country = $country ;
$mon = $date[mon];
echo mon = . $mon . ;
echo $monthname[$country][$mon];
echo \n;
}
$timestamp = time();
show_lang_date($timestamp, NL);
show_lang_date($timestamp, BR);
show_lang_date($timestamp, EN);
?
When I run this I get the following output
Content-type: text/html
X-Powered-By: PHP/4.3.3
mday = 28 country = NL mon = 3
mday = 28 country = BR mon = 3
mday = 28 country = EN mon = 3
so no monthname!
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[PHP] Re: Newbie question on Array
You can't do it that way.. You'll probably get parse error..
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Mail: dvdmandt¤telia.com
[EMAIL PROTECTED] skrev i meddelandet
news:[EMAIL PROTECTED]
Sorry, I am new and could not supply the correct search strings on search
sites to answer by question.
I am trying to construct an array with key-value from a resultSet which
will
be used often within the page or between pages.
Which looks like this:
$optionBox=select used_1, rub from rub_table order by rub asc;
$rs_box=mysql_query($optionBox,$con);
$arr=Array(
while($row=mysql_fetch_array($rs_box))
{
'$row[used_1]' = '$row[rub]' ,
});
,--- This does not need to appear in the last loop.
Is this possible?, if yes what is wrong with my code?.
many thanks for your help..
(._.)---Carlson
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[PHP] Re: Newbie question
it sounds like maybe you dont have the mysql php extension turned on in the php ini file, or your php doesnt have mysql support? Luke James Marcinek [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED] Hello Everyone, I'm new to this so forgive my ignorance. I'm trying to use php with MySQL as a database. I'm using apache 2.0 in addition to Mysql 4.1. I created a simple page (using book to learn) and when I try to go to a simple php script I recieve the following error: Call to undefined function: mysql_connect() I've followed the instructions and the mysql_connect() function has the correct arguments supplied (host, user, passwd); Can anyone shed any light on this? I've looked at the php.ini file and it looks ok. the apache has the php.conf file in the conf.d directory. The book I'm learning from had some simple examples pages that I created early on and they work; however this is the first attempt at trying to use php to connect. Any help would be appreciated. Thanks, James -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: newbie question about scope
things to check.. check the register_globals flag in php.ini - you can also set this using ini_set() Check the short_open_tags are either on/off - again this chan be changes in ini_set() pete News.Comcast.Giganews.Com wrote: I am an experienced web developer who is just getting into php. I have had a php project fall into my lap and wanted a little advice. Here is the scoop: A client moved their site from a server (unknown details) to a hosting facility (php 4.3.2). Now none of the scripts work. I have guessed that they are coming from an earlier version of apache/php. Anyway it appears that whoever created the site in the first place did not believe in scoping variables. Now any variable that is not properly scoped will not be read by the server. I know I can simply scope all of the variables, but I was hoping there may be an easier way. Also, how bad is the _REQUEST scope I read that it could not be trusted, however the previous developer created the app in such a way that several places a variable could be _GET or _POST. I apologize for the rambling and possible incoherency of this message, I am a bit tired. Matthew PS. How do you scope queries? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: newbie question
How do I get PHP to automatically open another PHP page in a browser if a condition is met? I have a pull down HTML table that submits a form to a PHP script. That script then uses a little logic to figure out which web page to go to. I have 5 different pages, and each has different content. Right now, I can make it bring up links, but I can't figure a way out to make it automatically go to the proper web page. I know this has to be easy, but I can't find any info one it. First some Good News: Here's a couple quickie options: 1. Use http://php.net/include to just suck in the other file to the shell that you've built. 2. Use http://php.net/header as header(Location: $otherpage); to re-direct the browser. Now, some meta-comments about these techniques. 1. Seems really nice, until you have to come back to the page and maintain it a couple years down the line. It gets really messy to figure out what variables are coming from where when you have this shell game going on sucking in different files based on a variable. You can work with it, but expect to end up investing more in maintenance than you should 2. is really an abusive use of a mechanism for pages that *MOVED* -- header(Location: ) is really not the right weapon for programming site/layout. It was designed for pages that have literally been picked up and moved to another URL/server/whatever. It *can* be used to force the user to jump around inside your site, but that was not its intent, and will be problematic. One specific instance is that you'll end up not being able to use Cookies/Sessions reliably because the re-location happens before the Cookie makes it out the door. Now, for the Bad News: You really need to re-think the big picture of the design of your web-site so that you don't have to do this. You can use JavaScript in your HTML to re-direct the user to a different page, and leave PHP out of the page-choosing logic. But then you are relying on JavaScript which is unreliable, and some users don't even have it. It may work for the sites you visit (for *you*) and you may find it attractive, but there *will* be users who leave your site because it doesn't work. Your best bet is to not use an HTML pop-up menu for navigation at all. There is no reliable way using maintainable code that will make it really work. -- Like Music? http://l-i-e.com/artists.htm -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: Newbie question about SQL result formatting
see nl2br(). You might also want to convert spaces to nbsp;'s On Fri, 9 Aug 2002, Kristoffer Strom wrote: Ok, this is totally newbie but I just started messing around with PHP after programming IBM's NetData for a while. My first big problem I haven't been able to solve myself is how to format the result of an SQL query into HTML code. In the (MySQL) database, I have one field for very long texts. One test entry looks like this: -- test test test -- But when printing the result, even with HTMLENTITIES and HTMLSPECIALCHARS, just looks like: - test test test - How do I convert the result to HTML code, I especially want the linebreaks!! The answer is probably very simple /Kris -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: Newbie question about SQL result formatting
There we go :) If there's any consolation, you just helped NataliePortman.com become a better website :) Thx /Kris Philip Hallstrom [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... see nl2br(). You might also want to convert spaces to nbsp;'s On Fri, 9 Aug 2002, Kristoffer Strom wrote: Ok, this is totally newbie but I just started messing around with PHP after programming IBM's NetData for a while. My first big problem I haven't been able to solve myself is how to format the result of an SQL query into HTML code. In the (MySQL) database, I have one field for very long texts. One test entry looks like this: -- test test test -- But when printing the result, even with HTMLENTITIES and HTMLSPECIALCHARS, just looks like: - test test test - How do I convert the result to HTML code, I especially want the linebreaks!! The answer is probably very simple /Kris -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: Newbie question : PHP variables are not posted by this
Can you send the code that is failing to the list - it will help in working out the problem... Mikey FréDéRick St-Hilaire [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... It a BASIC question, With the following: FORM NAME='Job_Application' ACTION=job_action.php METHOD=post ENCTYPE=multipart/form-data INPUT TYPE=text NAME=name Name : BR INPUT TYPE=HIDDEN NAME=MAX_FILE_SIZE VALUE=20 INPUT TYPE=FILE NAME=userfileBRBR INPUT TYPE=submit NAME=enter VALUE=SendBR INPUT TYPE=reset value=reset name=resetBR /FORM With the job_action.php I want to display the resaults to the user. But the variable name is empty. What's the problem? Thanks Frédérick St-Hilaire -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Re: Newbie question : PHP variables are not posted by this
On Friday, May 31, 2002, 5:17:49 PM, you wrote: Can you send the code that is failing to the list - it will help in working out the problem... And include your platform details (OS, PHP version, etc). -- Stuart -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: Newbie question about PHP and Oracle
Hi,
I think you mean hwo u can get the data into an array
well here is an example :
$query = select ...;
$stmt = ociparse( $connectionhandle, $query );
if( ociexecute( $stmt, OCI_DEFAULT ) ){
ocifetchinto( $stmt, $row, OCI_ASSOC+OCI_RETURN_NULLS );
}
and now you got 1 resultset in an associative array called $row.
take a look at the oci-functions in the manual for the different flags u can
set.
regards
markus mirsberger
Michael Sweeney [EMAIL PROTECTED] schrieb im Newsbeitrag
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
a VERY newbie question, just how do I get data into a listbox? In mysql it
was pretty easy with mysql_fetch_row, but for oracle I am totally lost.
Thanks!
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[PHP] Re: Newbie question to everybody....PHP
R wrote: Greetings people, Special greetings to all of you who have helped me in the past. As most of you know i am a newbie, I learned a bit of PHP via webmonkey and a few other places, seeing the power of PHP i decided to convert from Java servlets and JSP (JSP coz its expensive to host and not many hosting opportunities) so I baught a book called The PHP black book. Anyway, now that the background is done heres my questions: 1)How many of you have seriously dug into arrays and has it been important in your programming? 1.1)Do you think you could have done the same thing you did with arrays WITHOUT arrays? (The reason i ask this is theres a whole chapter dedicated to arrays in the book its pretty frustrating) Last question: Is ther any function to make the program sleep for 10 seconds or so? or does anybody have a function that does this? ANY replies good,bad,flames will be welcome. Cheers, -Ryan. /* You cannot get to the top by sitting on your bottom. */ I couldn't imagine a world without arrays. But even if you don't understand the creation of arrays, you should at least get familiar with the $_POST,$_GET,$_SERVER,etc... arrays as you probably won't be able to write any useful scripts without them. Not to mention the fact that you will probably never be able interface with a database without using arrays. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: Newbie Question
try this:
html
head
titleSolid/title
meta http-equiv=Content-Type content=text/html; charset=iso-8859-1
/head
body bgcolor=#FF text=#00
table width=384 border=1
?php
$fp = fopen (album.dat,r);
while ($data = fgetcsv ($fp, 1000, ;))
{
if (isset($data[0]))
{
print(tr);
print(td.$data[0]./td);
print(tdimg src=\images/.$data[1].\a href
=\prod.php?file=lecteur.dat\/a/td);
print(td.$data[2]./td);
print(td.$data[3]./td);
print(td.$data[4]./td);
print(td.$data[5]./td);
print(/tr);
}
}
?
/table
/body
/html
Hubert Daul [EMAIL PROTECTED] schrieb im Newsbeitrag
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
Hi ,
Here's my problem :
I read a data file (no sql file) which contains 8 lines, and in each line,
8
datas
(ex: name1;picture1;title1;anything1;everything1;nothing1)
and when i run it I see only one picture(the second data) and not all of
them
If someone could help me
TYA
Here the code :
html
head
titleSolid/title
meta http-equiv=Content-Type content=text/html; charset=iso-8859-1
/head
body bgcolor=#FF text=#00
table width=384 border=1
?php
$row = 1;
$fp = fopen (album.dat,r);
while ($data = fgetcsv ($fp, 1000, ;))
{
$num = count ($data);
$row++;
if (isset($vignette))
{
print(tr);
print(td$vignette/td);
// I think it's wrong here but I dont know why
== print(tdimg src=\images/$photo\a href =
\prod.php?file=lecteur.dat\/a/td);
print(td$marque/td);
print(td$nom/td);
print(td$pdfproduit/td);
print(td$commprod/td);
print(/tr);
}
for ($c=0; $c$num; $c++)
switch ($c) {
case 0 :
{
$vignette = $data[$c];
break;
}
case 1 :
{
$photo= $data[$c];
break;
}
case 2 :
{
$marque= $data[$c];
break;
}
case 3 :
{
$nom = $data[$c];
break;
}
case 4 :
{
$pdfproduit= $data[$c];
break;
}
case 5 :
{
$commprod = $data[$c];
break;
}
}
}
?
/table
/body
/html
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[PHP] Re: newbie question: how to recompile PHP?
Strange..U sure you got the Win32 version?? Heres a mirror where u can get the installer: http://www.evilwalrus.com/downloads/php/4.1.2/php-4.1.2-installer.exe All the best, Craig Bogdan Popescu [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Hello all, I hope my newbie question don't bother you too much. I've downloaded the latest PHP for windows but when I try to use it I get a message that I have to re-compile it. (You may disable this restriction by recompiling the PHP binary with the --disable-force-cgi-redirect switch.) Can anybody tell me a couple of words about how to recompile PHP? Or this error message is just an issue of php.ini? I got the sources but what kind a compiler do I need, where from I can get it? -- TIA, Bogdan mailto:[EMAIL PROTECTED] -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: Newbie question...
Try wget if it's installed. If not, lynx, a shell-based web browser, is installed on quite a few machines. J Ben Turner wrote: This may be a bit off topic but I am trying to install the pdflib package for Linux so I can make pdfs through php and I was wondering if anyone might know the command to download a file via CRT from an http source. I apologize to the OT but I cant seem to get much of anything to work for me. Thanks! Ben -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: Newbie: Question about filesize()
You also seem to have an extra equals. Your loop should read:
while (false != ($file=readdir($handle))){
It should come up as an error, but I'm not sure.
Ben
Manuel Ritsch wrote:
Hello There
I'm new to PHP and trying to code a function that reads all teh files out of
a directory and printing out a link and the filesize,
but it seems that the filesize() function doesn't work, here's the code so
far:
$handle = opendir ('images');
echo Files:brbr;
while (false !== ($file = readdir ($handle))) {
if($file != . $file != ..)
{
$file_s = filesize($file);
echo a href=images/$file$file/a Filesize:
$file_sbr;
}
}
closedir($handle);
and the output is somethingl ike this:
Files:
button_test_04.gif Filesize:
button_test_03-down.gif Filesize:
lilextras_01.gif Filesize:
(and so on)...
You see, there's no Filesize and I don't know why, please help me
-- manu
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RE: [PHP] Re: Newbie: Question about filesize()
that should be okay - it's to make sure that it is exactly equal to (as
opposed to equates to be equal to)
eg (0 === false) = false
(0 == false) = true
-Original Message-
From: Ben Crawford [mailto:[EMAIL PROTECTED]]
Sent: Thursday, February 07, 2002 2:28 AM
To: [EMAIL PROTECTED]
Subject: [PHP] Re: Newbie: Question about filesize()
You also seem to have an extra equals. Your loop should read:
while (false != ($file=readdir($handle))){
It should come up as an error, but I'm not sure.
Ben
Manuel Ritsch wrote:
Hello There
I'm new to PHP and trying to code a function that reads all teh files out
of
a directory and printing out a link and the filesize,
but it seems that the filesize() function doesn't work, here's the code so
far:
$handle = opendir ('images');
echo Files:brbr;
while (false !== ($file = readdir ($handle))) {
if($file != . $file != ..)
{
$file_s = filesize($file);
echo a href=images/$file$file/a
Filesize:
$file_sbr;
}
}
closedir($handle);
and the output is somethingl ike this:
Files:
button_test_04.gif Filesize:
button_test_03-down.gif Filesize:
lilextras_01.gif Filesize:
(and so on)...
You see, there's no Filesize and I don't know why, please help me
-- manu
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Re: [PHP] Re: Newbie: Question about filesize()
At 10:27 AM 2/6/2002 -0500, Ben Crawford wrote:
You also seem to have an extra equals. Your loop should read:
while (false != ($file=readdir($handle))){
I think you could eliminate the false != in the while condition...
It should be just the same if you write
while (($file = readdir($handle)))
right?
-Jeff
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Re: [PHP] Re: Newbie: Question about filesize()
On Wed, 2002-02-06 at 07:27, Ben Crawford wrote:
You also seem to have an extra equals. Your loop should read:
while (false != ($file=readdir($handle))){
It should come up as an error, but I'm not sure.
Ben
No, that's the 'identical' operator, which returns true when its
operands are both equalivalent and of the same type:
http://www.php.net/manual/en/language.operators.comparison.php
Cheers,
Torben
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http://www.hybrid17.com
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Re: [PHP] Re: Newbie: Question about filesize()
On Wed, 2002-02-06 at 15:33, Jeff Sheltren wrote:
At 10:27 AM 2/6/2002 -0500, Ben Crawford wrote:
You also seem to have an extra equals. Your loop should read:
while (false != ($file=readdir($handle))){
I think you could eliminate the false != in the while condition...
It should be just the same if you write
while (($file = readdir($handle)))
right?
-Jeff
Wrong, actually. If you have any files in that directory which have
names which would evaluate as false in PHP, then your way will fail on
them and you'll get a truncated directory listing. Do 'touch 0' in a
directory and give it a shot; you'll see what I mean.
However, the original example does the same thing, since it only checks
whether the result of the readdir() evaluates to FALSE, not whether it
actually is a boolean FALSE value. The correct way to do this is:
while (FALSE !== ($file = readdir($handle))) {
. . .
}
Note the !== instead of !=.
Hope this helps,
Torben
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http://www.thebuttlesschaps.com
http://www.hybrid17.com
http://www.inflatableeye.com
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[PHP] Re: Newbie: Question about filesize()
Manuel Ritsch [EMAIL PROTECTED] wrote: $file_s = filesize($file); you want $file_s = filesize(images/$file). jim -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
[PHP] Re: Newbie question on Tutorials?
Bunch of them! Check php.net's links and sift through those. Web Monkey has a good primer on PHP MySQL. Geoff E [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Okay, probably been asked zillions of times already, but I couldn't find reference to it in the last 5 minutes. :) Where can I find newbie-novice tutorials on php/mysql? My server is PHP4/MySql on a Apache/FreeBSD. I want to learn how to make these types of sites: Dating, BuySell, Forums, etc... I have VB, Delphi, and C programming experience, so I'm hoping it won't be too hardcore. :) Cheers, - Geoff -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
[PHP] Re: Newbie Question
Ok, I think I have the solution to your problem. Try using nl2br() on the data in that field.. Example: I have a message table that allows one user to send an instant message to another user on my site. There are several fields, one of which being a TEXT column (MySQL db). I use a simple textarea form element to get the data. It inserts into the DB as basically a single line regardless of the ENTER keystrokes in the data. Now, when I pull it back out I use this: $query = SELECT * FROM message WHERE msg_id = '$msg_id'; $query_result = mysql_query($query); $query_row = mysql_fetch_array($query_result); $message = $query_row[message]; echo Message text:.nl2br($message); And that should do what you need. Lee Willmann Steve Brett [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED]... have a look at get_html_translation_table() in the php manual. there is an example of conversion of all special chars so they can be inserted into the database as text (i.e. £pound) and a cool way of 'decoding' them if you need to write them to a file. A Browser wil interpret them correctly when they are displayed. This must be the question of the day as i have posted this answer three times today :-) Let me know if you need any more help Steve get_html_translation_table manual page is below: PHP Manual Prev Next -- -- get_html_translation_table (PHP 4 = 4.0b4) get_html_translation_table -- Returns the translation table used by htmlspecialchars() and htmlentities() Description string get_html_translation_table (int table [, int quote_style]) get_html_translation_table() will return the translation table that is used internally for htmlspecialchars() and htmlentities(). There are two new defines (HTML_ENTITIES, HTML_SPECIALCHARS) that allow you to specify the table you want. And as in the htmlspecialchars() and htmlentities() functions you can optionally specify the quote_style you are working with. The default is ENT_COMPAT mode. See the description of these modes in htmlspecialchars(). Example 1. Translation Table Example $trans = get_html_translation_table (HTML_ENTITIES); $str = Hallo Frau Krämer; $encoded = strtr ($str, $trans); The $encoded variable will now contain: Hallo amp; lt;Fraugt; amp; Krauml;mer. The cool thing is using array_flip() to change the direction of the translation. $trans = array_flip ($trans); $original = strtr ($str, $trans); The content of $original would be: Hallo Frau Krämer. Note: This function was added in PHP 4.0. See also: htmlspecialchars(), htmlentities(), strtr(), and array_flip(). -- -- Prev Home Next explode Up get_meta_tags Jay Fitzgerald [EMAIL PROTECTED] wrote in message news:[EMAIL PROTECTED]... Ok, I am still fairly new at PHP and MySQL also, so please bear with me. TASK: I have a client that wants to have job openings listed on their site and they want to be able to add, edit and delete the postings themselves. I would do this in flat-file format but there is the risk of that file size getting too large and slowing down the server. SOLUTION: I have created a MySQL database that will hold all the postings in a table called 'jobs' and have created a PHP form that will post this jobs into the db. PROBLEM: When I go to the PHP form and enter all of the pertinent job information, there is one specific field that will have to have carriage returns/line breaks in it between paragraphs. Everything is working except for this. Is there a way whenever the user presses ENTER, that either PHP/MySQL will convert this into a BR tag only when being displayed in a browser and not in the db?? Can anyone out there please help me with this? I am available off-list as well if it will be easier to pass code back and forth. Any assistance is greatly appreciated! Should you have any questions, comments or concerns, feel free to call me at 318-338-2034. Thank you for your time, Jay Fitzgerald, Design Director - CSBW-A, CPW-A, CWD-A, CEMS-A == Bayou Internet..(888) 30-BAYOUhttp://www.bayou.com Mississippi Internet...(800) MISSISSIPPI...http://www.mississippi.net Vicksburg Online..(800) MISSISSIPPIhttp://www.vicksburg.com == Tel: (318) 338-2034ICQ: 38823829 Fax: (318) 323-5053 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
[PHP] Re: Newbie question pleeze help
Rvb Pixels wrote: Hi, I'm new to the list and I have a problem with PHPNUKE 5.2 and W98. After installing some categories and links in the Web Links section, and then clicking on one of the links created I keep getting the following message error in W98SE. PHP caused an invalid page fault in module PHP4TS.DLL... Does anyone know why and how can I solve this problem ? Your web server (Apache or IIS) has a log file with every error recorded, or at least, every error that isn't so horrendous that making a record is possible. For Apache with the default installation Windows, it's in: C:/Program Files/Apache Group/Apache/logs/error_log (I think) You may have some useful details in that file that can clue you in to what is happening. There may also be instructions at http://bugs.php.net about how to track down these kinds of errors. -- Like music? http://l-i-e.com/artists.htm -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
[PHP] Re: Newbie Question re: Select boxes
Lb [EMAIL PROTECTED] wrote: 1) I thought that PHP automatically created variables for all form elements on a page. When I run this, the dropdown box contains the first item, but $Report evaluates as null. I am unclear why. select name=ReportBR option value=1 Test Report A/option option value=2 Test Report B/option option value=3 Test Report C/option /select ? echo (the value is $Report); ? you have set the value for each option to an empty string. you probably mean either 'option value=1Test Report A/option' or 'option1 Test Report A/option'. 2) Is there any way for PHP to detect the change even on the dropdown, or do I need to use javascript? you have to use javascript. jim -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
[PHP] Re: Newbie question: Page Counter
this counter'll increment the counter, no matter where are you go the page
from. If you only want that the counter increment for the first time
visitor visit the website, put the code at mainpage file, and check also
the page referrer weather it's a local url or not.
-toto-
Adam writes:
make a file called counter.php and include this text:
//-counter.php--
---//
?php
//Simple PHP counter, v0.1. Send comments to [EMAIL PROTECTED]
if (file_exists('count.inc'))
{
$fil = fopen('count.inc', r);
$dat = fread($fil, filesize('count.inc'));
echo $dat+1;
fclose($fil);
$fil = fopen('count.inc', w);
fwrite($fil, $dat+1);
}
else
{
$fil = fopen('count.inc', w);
fwrite($fil, 1);
echo '1';
fclose($fil);
}
php?
//--
--//
then make a file called count.inc and chmod it to 777 so anyone can write to
it. insert a number into the file.
//--count.inc---
--//
some value
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