Re: [PHP] concatenating
Hello Chris, CS Is it possible to concatenate a string and an element from a CS mysql_fetch_assoc array? I haven't had much luck searching google. CS Such as concatenating results with ' . $posts_row['store_tptest'] . CS ' so that if there are no elements returned nothing will be displayed? if (!empty($posts_row['store_tptest'])) $str=results .$posts_rows['store_tptest']; -- With best regards from Ukraine, Andre Skype: Francophile My blog: http://oire.org/menelion (mostly in Russian) Twitter: http://twitter.com/m_elensule Facebook: http://facebook.com/menelion -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] concatenating
read the manual
http://www.php.net/manual/en/ref.strings.php
A comprehensive concatenation function, that works with array and strings
?php
function str_cat() {
$args = func_get_args() ;
// Asserts that every array given as argument is $dim-size.
// Keys in arrays are stripped off.
// If no array is found, $dim stays unset.
foreach($args as $key = $arg) {
if(is_array($arg)) {
if(!isset($dim))
$dim = count($arg) ;
elseif($dim != count($arg))
return FALSE ;
$args[$key] = array_values($arg) ;
}
}
// Concatenation
if(isset($dim)) {
$result = array() ;
for($i=0;$i$dim;$i++) {
$result[$i] = '' ;
foreach($args as $arg)
$result[$i] .= ( is_array($arg) ? $arg[$i] : $arg ) ;
}
return $result ;
} else {
return implode($args) ;
}
}
?
A simple example :
?php
str_cat(array(1,2,3), '-', array('foo' = 'foo', 'bar' = 'bar', 'noop' =
'noop')) ;
?
will return :
Array (
[0] = 1-foo
[1] = 2-bar
[2] = 3-noop
)
More usefull :
?php
$myget = $_GET ; // retrieving previous $_GET values
$myget['foo'] = 'b a r' ; // changing one value
$myget = str_cat(array_keys($myget), '=', array_map('rawurlencode',
array_values($myget))) ;
$querystring = implode(ini_get('arg_separator.output'), $myget)) ;
?
will return a valid querystring with some values changed.
Note that ?php str_cat('foo', '', 'bar') ; ? will return 'foobar',
while ?php str_cat(array('foo'), '', 'bar') ; ? will return array(0 =
foobar)
*t0russ at gmail dot com* 14-Jun-2005
05:38http://www.php.net/manual/en/ref.strings.php#53834
to kristin at greenaple dot on dot ca:
thanx for sharing.
your function in recursive form proved to be slightly faster and it returns
false (as it should) when the character is not found instead of number 0:
?php
function strnposr($haystack, $needle, $occurance, $pos = 0) {
return ($occurance2)?strpos($haystack, $needle,$pos):strnposr($haystack
,$needle,$occurance-1,strpos($haystack, $needle, $pos) + 1);
}
?
Re: [PHP] concatenating
At 12:03 AM 8/11/2011, Chris Stinemetz wrote:
Is it possible to concatenate a string and an element from a
mysql_fetch_assoc array? I haven't had much luck searching google.
Such as concatenating results with ' . $posts_row['store_tptest'] .
' so that if there are no elements returned nothing will be displayed?
Sure, do something like this:
?php
echo ($posts_row['store_tptest'] != '')?results
{$posts_row['stor_tptest']}:'';
?
Ken
--
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Re: [PHP] Concatenating PDF using FPDI
Bastien - Thanks for the tip. I tried setting auto_detect_line_endings=ON on my PHP.ini file (I am on a shared host - siteground), but the problem persists. The auto_detect_line_endings parameter on my local machine is OFF. Bastien Koert-3 wrote: On Sun, Sep 28, 2008 at 3:33 AM, giga501 wrote: Hi - I am trying to attach a pre-defined PDF to a file generated at runtime (invoice.pdf). I have attached the test.php that I used to concatenate 2 pdfs. http://www.nabble.com/file/p19709464/test.php test.php I have also verified that I have the latest version of FPDF and FPDI. However, here is the error I get on executing the file on my server (shared host using CPanel) : FPDF error: Unable to find xref table - Maybe a Problem with 'auto_detect_line_endings' The functionality works fine on my localhost (WAMPServer, WinXP), so I am wondering if there are any other server parameters to look at ? Any ideas on what is wrong here? Thanks in advance. -- View this message in context: http://www.nabble.com/Concatenating-PDF-using-FPDI-tp19709464p19709464.html PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php Its a setting in the php.ini file that may need to be changed. Line endings change from Winblows to Unix/Linux servers, so it may need to be reset -- View this message in context: http://www.nabble.com/Concatenating-PDF-using-FPDI-tp19709464p19722844.html Sent from the PHP - General mailing list archive at Nabble.com. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Concatenating PDF using FPDI
On Sun, Sep 28, 2008 at 3:33 AM, giga501 [EMAIL PROTECTED] wrote: Hi - I am trying to attach a pre-defined PDF to a file generated at runtime (invoice.pdf). I have attached the test.php that I used to concatenate 2 pdfs. http://www.nabble.com/file/p19709464/test.php test.php I have also verified that I have the latest version of FPDF and FPDI. However, here is the error I get on executing the file on my server (shared host using CPanel) : FPDF error: Unable to find xref table - Maybe a Problem with 'auto_detect_line_endings' The functionality works fine on my localhost (WAMPServer, WinXP), so I am wondering if there are any other server parameters to look at ? Any ideas on what is wrong here? Thanks in advance. -- View this message in context: http://www.nabble.com/Concatenating-PDF-using-FPDI-tp19709464p19709464.html Sent from the PHP - General mailing list archive at Nabble.com. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php Its a setting in the php.ini file that may need to be changed. Line endings change from Winblows to Unix/Linux servers, so it may need to be reset -- Bastien Cat, the other other white meat
Re: [PHP] concatenating with . or ,
tedd wrote:
There are significant orders of magnitude difference between your results
and mine.
For example, it didn't make any difference if you used a comma or
concatenation, but in my system concatenation was 15 times faster than using
a comma. Interesting, I would have guessed it would have been the other way
around.
I refined the test, so that it is more random and therefore maybe more accurate.
Test Results
Results for 2048 cycles of echoing a 32-character string with a random
32-character string 2048 times:
comma Method
Number of Echoes: 536
Total time: 1.57938525391 milliseconds
Average time: 0.00294661427968 milliseconds
concat Method
Number of Echoes: 537
Total time: 2.64919824219 milliseconds
Average time: 0.0049005994 milliseconds
interpol Method
Number of Echoes: 480
Total time: 4.38319873047 milliseconds
Average time: 0.00913166402181 milliseconds
heredoc Method
Number of Echoes: 495
Total time: 3.66322021484 milliseconds
Average time: 0.00740044487847 milliseconds
Results for echoing 128 random 32-character string 2048 times:
comma Method
Number of Echoes: 536
Total time: 817.227 milliseconds
Average time: 1.52467723881 milliseconds
concat Method
Number of Echoes: 537
Total time: 826.971 milliseconds
Average time: 1.53998324022 milliseconds
interpol Method
Number of Echoes: 480
Total time: 3764.781 milliseconds
Average time: 7.84329375 milliseconds
heredoc Method
Number of Echoes: 495
Total time: 540.391 milliseconds
Average time: 1.0916989899 milliseconds
--
For all those who want to try it out, here is the code:
--
!DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.0 Transitional//EN
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd;
html xmlns=http://www.w3.org/1999/xhtml;
head
meta http-equiv=Content-Type content=text/html; charset=utf-8 /
titleTest for Tedd/title
/head
body style=font-size: small;
h1Test Results/h1
?php
global $iterations, $results, $test_string;
$iterations = 2048;
$iterations2 = 128; // iterations for 2nd test
$results1 = array(
comma = array(total_time = 0, count = 0),
concat = array(total_time = 0, count = 0),
interpol = array(total_time = 0, count = 0),
heredoc = array(total_time = 0, count = 0)
);
$results2 = $results1;
$test_array = array();
$test_string = md5(time()); // a 32 character string
$eval_strings = create_eval_strings();
for ($i = 0; $i $iterations; ++$i) $test_array[] =
str_shuffle($test_string); // random strings
for ($i = 0; $i $iterations; ++$i) test_method(rand(0,3));
function test_method($method) {
$start_time = $end_time = 0;
$test_array = $GLOBALS['test_array'];
$test_string = $GLOBALS['test_string'];
$eval_strings = $GLOBALS['eval_strings'];
for ($i = 0; $i 10; ++$i) {
$j = rand(0, $GLOBALS['iterations']);
$test_array[$j] = str_shuffle($test_array[$j]); // change some arr
vals to outsmart any php speedup/cache
}
$arr2 = array(); // array for 2nd test
for ($i = 0; $i $GLOBALS['iterations2']; ++$i) $arr2[] =
$test_array[rand(0, $GLOBALS['iterations'])];
# 1st test will output # of iterations random strings
# 2nd test will output a sequence of #iterations2 random strings
switch ($method) {
case 0: // comma
# - TEST 1 -
ob_start();
$start_time = microtime(true);
foreach ($test_array as $array_value) {
echo $test_string, $array_value;
}
$end_time = microtime(true);
ob_end_clean();
$GLOBALS[results1][comma][total_time] += abs($end_time -
$start_time)*1000/$GLOBALS[iterations];
++$GLOBALS[results1][comma][count];
# - TEST 2 -
ob_start();
$start_time = microtime(true);
eval($eval_strings['comma']);
$end_time = microtime(true);
ob_end_clean();
$GLOBALS[results2][comma][total_time] += abs($end_time -
$start_time)*1000;
++$GLOBALS[results2][comma][count];
break 1;
case 1: // concatenation
# - TEST 1 -
ob_start();
$start_time = microtime(true);
foreach ($test_array as $array_value) {
echo $test_string.$array_value;
}
$end_time = microtime(true);
ob_end_clean();
$GLOBALS[results1][concat][total_time] += abs($end_time -
$start_time)*1000/$GLOBALS[iterations];
++$GLOBALS[results1][concat][count];
# - TEST 2 -
ob_start();
$start_time = microtime(true);
eval($eval_strings['concat']);
$end_time = microtime(true);
ob_end_clean();
echo $eval_string.\n;
$GLOBALS[results2][concat][total_time] += abs($end_time -
$start_time)*1000;
++$GLOBALS[results2][concat][count];
break 1;
case 2: // interpolation
# - TEST 1 -
ob_start();
$start_time = microtime(true);
foreach ($test_array as $array_value) {
echo
Re: [PHP] concatenating with . or ,
At 7:56 PM -0600 8/26/08, Govinda wrote: I never thanked all the people who answered my Q in so many helpful ways and on so many levels.I see that this list if chock full of really quality people with loads of expertise and many other fine qualities (tedd sperling's broad perspective, for one) ... I would be tempted to thank people all the time for so many things. What to do? -G Hey guys! We fooled another one. :-) Cheers, tedd PS: As for me -- thanks, but I'm not the smart one on this list -- just the best looking. :-) -- --- 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] concatenating with . or ,
On Wed, 2008-08-27 at 12:27 +0200, Bernhard Kohl wrote:
tedd wrote:
There are significant orders of magnitude difference between your results
and mine.
For example, it didn't make any difference if you used a comma or
concatenation, but in my system concatenation was 15 times faster than using
a comma. Interesting, I would have guessed it would have been the other way
around.
I refined the test, so that it is more random and therefore maybe more
accurate.
What does random have to do with the echo, concatenaton, interpolation,
or heredoc functionality? I would presume these to be mutually
exclusive. As such your test adds noise to the problem and is more than
likely less accurate.
--
For all those who want to try it out, here is the code:
--
!DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.0 Transitional//EN
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd;
html xmlns=http://www.w3.org/1999/xhtml;
head
meta http-equiv=Content-Type content=text/html; charset=utf-8 /
titleTest for Tedd/title
/head
body style=font-size: small;
h1Test Results/h1
?php
global $iterations, $results, $test_string;
$iterations = 2048;
$iterations2 = 128; // iterations for 2nd test
$results1 = array(
comma = array(total_time = 0, count = 0),
concat = array(total_time = 0, count = 0),
interpol = array(total_time = 0, count = 0),
heredoc = array(total_time = 0, count = 0)
);
An array? You do realize that arrays are stored as some kind of tree
with O( lg n ) lookup? This means that it WILL take longer to access
some of those entries than it does for others. They can't all be sitting
at the root node of the tree. These tests shoul dhave been run
individually.
$results2 = $results1;
$test_array = array();
$test_string = md5(time()); // a 32 character string
$eval_strings = create_eval_strings();
for ($i = 0; $i $iterations; ++$i) $test_array[] =
str_shuffle($test_string); // random strings
Aggain I'd like to point out that randomizing the string more than
likely does nothing for the benchmark.
for ($i = 0; $i $iterations; ++$i) test_method(rand(0,3));
A function call... to a less than simplistic function (yes simple
logically, complex when benchmarks should normally be run on the
simplest representation of the problem).
function test_method($method) {
$start_time = $end_time = 0;
$test_array = $GLOBALS['test_array'];
$test_string = $GLOBALS['test_string'];
$eval_strings = $GLOBALS['eval_strings'];
for ($i = 0; $i 10; ++$i) {
$j = rand(0, $GLOBALS['iterations']);
$test_array[$j] = str_shuffle($test_array[$j]); // change some arr
vals to outsmart any php speedup/cache
}
$arr2 = array(); // array for 2nd test
for ($i = 0; $i $GLOBALS['iterations2']; ++$i) $arr2[] =
$test_array[rand(0, $GLOBALS['iterations'])];
# 1st test will output # of iterations random strings
# 2nd test will output a sequence of #iterations2 random strings
switch ($method) {
case 0: // comma
# - TEST 1 -
ob_start();
$start_time = microtime(true);
foreach ($test_array as $array_value) {
echo $test_string, $array_value;
}
$end_time = microtime(true);
ob_end_clean();
$GLOBALS[results1][comma][total_time] += abs($end_time -
$start_time)*1000/$GLOBALS[iterations];
++$GLOBALS[results1][comma][count];
# - TEST 2 -
ob_start();
$start_time = microtime(true);
eval($eval_strings['comma']);
$end_time = microtime(true);
ob_end_clean();
$GLOBALS[results2][comma][total_time] += abs($end_time -
$start_time)*1000;
++$GLOBALS[results2][comma][count];
break 1;
Do you mind if I scream here... output buffering, eval, internal
microtime function to measure the efficiency of multiple different
approaches? These are all going to add to the noise. You should use the
system's time command to determine actual time spent on the process.
case 1: // concatenation
# - TEST 1 -
ob_start();
$start_time = microtime(true);
foreach ($test_array as $array_value) {
echo $test_string.$array_value;
}
$end_time = microtime(true);
ob_end_clean();
$GLOBALS[results1][concat][total_time] += abs($end_time -
$start_time)*1000/$GLOBALS[iterations];
++$GLOBALS[results1][concat][count];
# - TEST 2 -
ob_start();
$start_time = microtime(true);
eval($eval_strings['concat']);
$end_time = microtime(true);
ob_end_clean();
echo $eval_string.\n;
$GLOBALS[results2][concat][total_time] += abs($end_time -
$start_time)*1000;
++$GLOBALS[results2][concat][count];
break 1;
case 2: // interpolation
# - TEST 1 -
Re: [PHP] concatenating with . or ,
At 12:17 PM -0400 8/27/08, Robert Cummings wrote: What does random have to do with Oh no! Someone mentioned the R word in front of Rob. We should put this in a list of things not to do on this list. Cheers, 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] concatenating with . or ,
On Wed, 2008-08-27 at 13:13 -0400, tedd wrote: At 12:17 PM -0400 8/27/08, Robert Cummings wrote: What does random have to do with Oh no! Someone mentioned the R word in front of Rob. We should put this in a list of things not to do on this list. *heheh* well in the above I'm not so concerned about the issue of random itself, but more about how it doesn't benefit the particular issue being benchmarked. Random (or pretend random depending on your randomly religious views ;) is certainly useful in some benchmarks... for instance testing the speed of a new sorting algorithm, or tree algorithm, etc when a broad data sample is necessary. Cheers, Rob. -- http://www.interjinn.com Application and Templating Framework for PHP -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] concatenating with . or ,
At 10:37 PM +0200 8/25/08, Bernhard Kohl wrote: # Ok tedd, if you insist .. Bernhard: I wasn't insisting, but it's nice you picked up the Gauntlet. Good work and it validates (but of course, you didn't think I would check?). Your results: Comma took: 0.0191585 milliseconds on average. Concatenation: 0.0195376 milliseconds on average. Interpolation: 0.0279227 milliseconds on average. Heredoc: 0.0247411 milliseconds on average. My results: Comma took: 0.017329251766205 milliseconds on average. Concatenation: 0.0011050462722778 milliseconds on average. Interpolation: 0.0017022013664246 milliseconds on average. Heredoc: 0.0035961031913757 milliseconds on average. There are significant orders of magnitude difference between your results and mine. For example, it didn't make any difference if you used a comma or concatenation, but in my system concatenation was 15 times faster than using a comma. Interesting, I would have guessed it would have been the other way around. However in both, the end-user will never notice any difference unless we are showing them over 50,000 commas and then the time it would take the browser to show 50,000 commas will completely mask the one second of server-side time required to provide that. I predict in the near future, considering that cpu speed is increasing and storage v cost is deceasing almost exponentially, newer programmers will not even concern themselves with speed/storage issues. Similarity, current programmers in their 20's when reaching 50 will be hearing younger programmers ask What's caching? The cycle of programming continues. Cheers, 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] concatenating with . or ,
tedd a écrit : The cycle of programming continues. And the algorithm era crunch down ;) The test isn't accurate because it focuses on two strings of the same length. And all programmers know that some algorithms depends on the size of the data handled, and the number of it. Obviously, parameters method of echo must be faster than concatenation method. If it isn't, we are in the window that is better, or they are a problem, or an optimization ;) The reason is PHP make an allocation of a new string when concat that equal to the size of the two strings, and copy strings content into the new allocate memory zone. So if you just echo, it allocates the memory just needed to copy in the echoed string. So said, benchmarks must be make with a good knoledge of what you're handling, although you can't do a good one. For example, I can't make a benchmark on english as you can see ;) -- Mickaël Wolff aka Lupus Michaelis http://lupusmic.org -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] concatenating with . or ,
On Tue, 2008-08-26 at 12:07 -0400, tedd wrote: At 10:37 PM +0200 8/25/08, Bernhard Kohl wrote: # Ok tedd, if you insist .. Bernhard: I wasn't insisting, but it's nice you picked up the Gauntlet. Good work and it validates (but of course, you didn't think I would check?). Your results: Comma took: 0.0191585 milliseconds on average. Concatenation: 0.0195376 milliseconds on average. Interpolation: 0.0279227 milliseconds on average. Heredoc: 0.0247411 milliseconds on average. My results: Comma took: 0.017329251766205 milliseconds on average. Concatenation: 0.0011050462722778 milliseconds on average. Interpolation: 0.0017022013664246 milliseconds on average. Heredoc: 0.0035961031913757 milliseconds on average. Did you echo the resulting concatenation? Concatenation is surely going to be faster than output... but we're talking about output of data via argument list versus output of data that is first concatenated. It was already ascertained earlier that commas are ONLY useful for echo and print situations... so bearing that in mind did you echo your concatenated result when benchmarking concatenation? Cheers, Rob. -- http://www.interjinn.com Application and Templating Framework for PHP -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] concatenating with . or ,
Bernhard wrote: echo $test_string, $array_value; It seems like they echoed them -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] concatenating with . or ,
I never thanked all the people who answered my Q in so many helpful ways and on so many levels.I see that this list if chock full of really quality people with loads of expertise and many other fine qualities (tedd sperling's broad perspective, for one) ... I would be tempted to thank people all the time for so many things. What to do? -G for 'gratitude' and Govinda Oone is a concatenated string, the other is arguments. Arguments are executed and output in order, whereas the concatenation causes the function calls to be executed first and then the echo to display the return values concatenated into a single string. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] concatenating with . or ,
On Tue, 2008-08-26 at 19:56 -0600, Govinda wrote: I never thanked all the people who answered my Q in so many helpful ways and on so many levels.I see that this list if chock full of really quality people with loads of expertise and many other fine qualities (tedd sperling's broad perspective, for one) ... I would be tempted to thank people all the time for so many things. What to do? I take cheques :B But seriously, I think you'll find many are happy enough to see something like this response itself. Cheers, Rob. -- http://www.interjinn.com Application and Templating Framework for PHP -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] concatenating with . or ,
Govinda, please, consider the following code: ?php $brandA = 'Porshe'; $brandB = 'Jaguar'; $testA = $branA . $brandB; //testA will have the value PorsheJaguar $testB = $branA , $brandB; //Returns a Parse error: syntax error, unexpected ',' in /test.php on line 7 ? With that, you can see that the comma isn't a concatenation symbol as the period. When you use it with echo, you're actually passing more than one argument to the echo construct (why construct and not function? please, refer to http://us.php.net/manual/en/function.echo.php to get more details). My 2 cents on this great list. Regards from Brazil. Thiago Melo de Paula On Mon, Aug 25, 2008 at 1:27 AM, Govinda wrote: easy to find our about concatenating with . in the docs... but not so with , what is the difference?
Re: [PHP] concatenating with . or ,
hi, here it is described in detail: http://blog.libssh2.org/index.php?/archives/28-How-long-is-a-piece-of-string.html Govinda schrieb: easy to find our about concatenating with . in the docs... but not so with , what is the difference? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] concatenating with . or ,
Good, understood. To deepen (for me): why does this: echo 'p$_POST[\'SNGstep\']='.var_dump($_POST['SNGstep']).'^/p'.\n; spit out: NULL p$_POST['SNGstep']=^/p while this: echo 'p$_POST[\'SNGstep\']=',var_dump($_POST['SNGstep']),'^/p'.\n; spits out: p$_POST['SNGstep']=NULL ^/p ? I think it must be related to something Maciek was showing in his excellent example, but I am too green to see. On Aug 25, 2008, at 7:48 AM, Thiago Melo de Paula wrote: Govinda, please, consider the following code: ?php $brandA = 'Porshe'; $brandB = 'Jaguar'; $testA = $branA . $brandB; //testA will have the value PorsheJaguar $testB = $branA , $brandB; //Returns a Parse error: syntax error, unexpected ',' in /test.php on line 7 ? -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] concatenating with . or ,
On 25 Aug 2008, at 16:09, Govinda wrote: Good, understood. To deepen (for me): why does this: echo 'p$_POST[\'SNGstep\']='.var_dump($_POST['SNGstep']).'^/ p'.\n; spit out: NULL p$_POST['SNGstep']=^/p while this: echo 'p$_POST[\'SNGstep\']=',var_dump($_POST['SNGstep']),'^/ p'.\n; spits out: p$_POST['SNGstep']=NULL ^/p ? I think it must be related to something Maciek was showing in his excellent example, but I am too green to see. Oone is a concatenated string, the other is arguments. Arguments are executed and output in order, whereas the concatenation causes the function calls to be executed first and then the echo to display the return values concatenated into a single string. Because var_dump *outputs* stuff rather than returning it, in the concatenation version the NULL outputs before the rest of the string. Hope that clears it up. -Stut -- http://stut.net/ On Aug 25, 2008, at 7:48 AM, Thiago Melo de Paula wrote: Govinda, please, consider the following code: ?php $brandA = 'Porshe'; $brandB = 'Jaguar'; $testA = $branA . $brandB; //testA will have the value PorsheJaguar $testB = $branA , $brandB; //Returns a Parse error: syntax error, unexpected ',' in /test.php on line 7 ? -- 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
Re: [PHP] concatenating with . or ,
That is why i love this list. Always something new to learn.
What I am still wondering about is if it is faster to use commas or
the {} brackets? ( I don't know how that technique is called, since
I'm not a walking dictionary)
Example:
$var = blah blah;
echo $var,test;
echo {$var}test;
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Re: [PHP] concatenating with . or ,
On Mon, 2008-08-25 at 17:34 +0200, Yeti wrote:
That is why i love this list. Always something new to learn.
What I am still wondering about is if it is faster to use commas or
the {} brackets? ( I don't know how that technique is called, since
I'm not a walking dictionary)
Here is the order of speed from fastest to slowest:
commas - only useful if using echo or print
. - concatenation
{$foo}- interpolation of variables via double quotes
- heredoc
Cheers,
Rob.
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Re: [PHP] concatenating with . or ,
At 5:34 PM +0200 8/25/08, Yeti wrote:
That is why i love this list. Always something new to learn.
What I am still wondering about is if it is faster to use commas or
the {} brackets? ( I don't know how that technique is called, since
I'm not a walking dictionary)
Example:
$var = blah blah;
echo $var,test;
echo {$var}test;
One of the other things about this list is that sometimes people
actually test their ideas.
It's not that big of a deal to set up a test to show which is faster.
So, if you would like to know, then write a test for it.
Cheers,
tedd
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Re: [PHP] concatenating with . or ,
!DOCTYPE html PUBLIC -//W3C//DTD XHTML 1.0 Transitional//EN
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd;
html xmlns=http://www.w3.org/1999/xhtml;
head
meta http-equiv=Content-Type content=text/html; charset=utf-8 /
titleTest for Tedd/title
/head
body
?php
# Ok tedd, if you insist ..
$iterations = 2;
$test_string = md5('test'); // a 32 character string
$test_array = array();
for ($i = 0; $i $iterations; ++$i) $test_array[] = str_shuffle($test_string);
# - Comma
ob_start();
$s_t = microtime(true);
foreach ($test_array as $array_value) {
echo $test_string, $array_value;
}
$e_t = microtime(true);
ob_end_clean();
echo 'pComma took: strong'.(abs($e_t -
$s_t)*1000/$iterations).'/strong milliseconds on average./p';
# -- Concatenation
ob_start();
$s_t = microtime(true);
foreach ($test_array as $array_value) {
echo $test_string.$array_value;
}
$e_t = microtime(true);
ob_end_clean();
echo 'pConcatenation: strong'.(abs($e_t -
$s_t)*1000/$iterations).'/strong milliseconds on average./p';
# -- Interpolation
ob_start();
$s_t = microtime(true);
foreach ($test_array as $array_value) {
echo {$test_string}{$array_value};
}
$e_t = microtime(true);
ob_end_clean();
echo 'pInterpolation: strong'.(abs($e_t -
$s_t)*1000/$iterations).'/strong milliseconds on average./p';
# -- HereDoc
ob_start();
$s_t = microtime(true);
foreach ($test_array as $array_value) {
echo TEST
$test_string$array_value
TEST;
}
$e_t = microtime(true);
ob_end_clean();
echo 'pHeredoc: strong'.(abs($e_t -
$s_t)*1000/$iterations).'/strong milliseconds on average./p';
/*
I usually get results similar to these ones:
Comma took: 0.0191585 milliseconds on average.
Concatenation: 0.0195376 milliseconds on average.
Interpolation: 0.0279227 milliseconds on average.
Heredoc: 0.0247411 milliseconds on average.
*/
?
/body
/html
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Re: [PHP] concatenating strings
Hello Bill, Saturday, May 22, 2004, 11:43:17 AM, you wrote: BF how do I add newline commands in the middle of a text string? BF How do I write it so the email message text is on two lines, BF My name is BILL BF My favorite color is RED $message = My name is . $myname . \nMy favorite color is . $color; \n = new line -- Best regards, Richard Davey http://www.launchcode.co.uk / PHP Development Services http://www.phpcommunity.org/wiki/296.html / PHP Community -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] concatenating strings
From: Richard Davey [EMAIL PROTECTED] Saturday, May 22, 2004 6:46 AM Subject: Re: [PHP] concatenating strings BF how do I add newline commands in the middle of a text string? $message = My name is . $myname . \nMy favorite color is . $color; \n = new line Also \n only works in double quotes. If you use single quotes you need to break out and concatenate \n in double quotes. $message = 'My name is ' . $myname . \n . 'My favorite color is ' . $color; --- The future will be better tomorrow --- http://www.spiceplace.com/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] concatenating 2 resultsets
Angelo Zanetti wrote: Hi all, is it possible to concatenate two resultsets, to form a big resultset. What database are you using? both resultsets will return the same columns. eg query 1 returns NAME| ADDRESS| EMAIL query 2 returns NAME| ADDRESS| EMAIL but they have different data however the column count is the same (in fact they are the same column) Look at UNION syntax -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] concatenating 2 resultsets [SOLVED]
solved guys -Original Message- From: Angelo Zanetti [mailto:[EMAIL PROTECTED] Sent: Monday, March 15, 2004 12:30 PM To: [EMAIL PROTECTED] Subject: [PHP] concatenating 2 resultsets Hi all, is it possible to concatenate two resultsets, to form a big resultset. both resultsets will return the same columns. eg query 1 returns NAME| ADDRESS| EMAIL query 2 returns NAME| ADDRESS| EMAIL but they have different data however the column count is the same (in fact they are the same column) thanx in advance Angelo Disclaimer This e-mail transmission contains confidential information, which is the property of the sender. The information in this e-mail or attachments thereto is intended for the attention and use only of the addressee. Should you have received this e-mail in error, please delete and destroy it and any attachments thereto immediately. Under no circumstances will the Cape Technikon or the sender of this e-mail be liable to any party for any direct, indirect, special or other consequential damages for any use of this e-mail. For the detailed e-mail disclaimer please refer to http://www.ctech.ac.za/polic or call +27 (0)21 460 3911 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php Disclaimer This e-mail transmission contains confidential information, which is the property of the sender. The information in this e-mail or attachments thereto is intended for the attention and use only of the addressee. Should you have received this e-mail in error, please delete and destroy it and any attachments thereto immediately. Under no circumstances will the Cape Technikon or the sender of this e-mail be liable to any party for any direct, indirect, special or other consequential damages for any use of this e-mail. For the detailed e-mail disclaimer please refer to http://www.ctech.ac.za/polic or call +27 (0)21 460 3911 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] concatenating strings and \n's for mail...
You need to use "\n" for interpolation. --- Larry Rosenman [EMAIL PROTECTED] wrote: Greetings, I was trying to build up a multi-line body to use with the mail command, using code similar to: $mailbody = $mailbody . '\n' . $HTTP_POST_VARS["somefield"]; when I sent the mail, the \n showed up, not as a new line, but a literal \n. How do I fix this? This is with 4.0.4pl1. LER -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 972-414-9812 E-Mail: [EMAIL PROTECTED] US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749 -- 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] __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail - only $35 a year! http://personal.mail.yahoo.com/ -- 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]
Re: [PHP] concatenating strings and \n's for mail...
* Christian Cresante [EMAIL PROTECTED] [010214 13:27]: You need to use "\n" for interpolation. Tried that too... Didn't work for me... --- Larry Rosenman [EMAIL PROTECTED] wrote: Greetings, I was trying to build up a multi-line body to use with the mail command, using code similar to: $mailbody = $mailbody . '\n' . $HTTP_POST_VARS["somefield"]; when I sent the mail, the \n showed up, not as a new line, but a literal \n. How do I fix this? This is with 4.0.4pl1. LER -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 972-414-9812 E-Mail: [EMAIL PROTECTED] US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749 -- 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] __ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail - only $35 a year! http://personal.mail.yahoo.com/ -- 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] -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 972-414-9812 E-Mail: [EMAIL PROTECTED] US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749 -- 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]
Re: [PHP] concatenating strings and \n's for mail...
* Lewis Bergman [EMAIL PROTECTED] [010214 13:50]: On Wed, 14 Feb 2001, you wrote: Greetings, I was trying to build up a multi-line body to use with the mail command, using code similar to: $mailbody = $mailbody . '\n' . $HTTP_POST_VARS["somefield"]; when I sent the mail, the \n showed up, not as a new line, but a literal \n. How do I fix this? Did you try . "\r\n" . ? I use it though in many places just as you have "\n" Nope, will tonight though. ... -- Lewis Bergman Texas Communications 4309 Maple St. Abilene, TX 79602 915-695-6962 -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 972-414-9812 E-Mail: [EMAIL PROTECTED] US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749 -- 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]
Re: [PHP] concatenating strings and \n's for mail...
[restored to bottom-posting, for clarity] I was trying to build up a multi-line body to use with the mail command, using code similar to: $mailbody = $mailbody . '\n' . $HTTP_POST_VARS["somefield"]; snip I think you can do it like this: $mailbody="$varname\n$varname2"; That works. Hmm. I wonder why the concatenation didn't? Because '\n' is a string consisting of a backslash followed by the letter n, while "\n" is a newline character. Gotta use double-quotes. -- CC -- 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]
Re: [PHP] concatenating strings and \n's for mail...
* CC Zona [EMAIL PROTECTED] [010214 21:21]: [restored to bottom-posting, for clarity] I was trying to build up a multi-line body to use with the mail command, using code similar to: $mailbody = $mailbody . '\n' . $HTTP_POST_VARS["somefield"]; snip I think you can do it like this: $mailbody="$varname\n$varname2"; That works. Hmm. I wonder why the concatenation didn't? Because '\n' is a string consisting of a backslash followed by the letter n, while "\n" is a newline character. Gotta use double-quotes. I even had trouble within double quotes with the concatenation. LER -- Larry Rosenman http://www.lerctr.org/~ler Phone: +1 972-414-9812 E-Mail: [EMAIL PROTECTED] US Mail: 1905 Steamboat Springs Drive, Garland, TX 75044-6749 -- 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]
