Re: [PHP] array question

[Sorin Buturugeanu]

Tanks for all of your responses!

I guess a function is the way to go. I just have to see if the situation
comes up enough times to justify the function approach.

@Dan: I really enjoyed your disclaimer :D


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On 17 December 2010 23:48, Daniel Brown  wrote:

> On Fri, Dec 17, 2010 at 15:52, Sorin Buturugeanu  wrote:
> > Hello all!
> >
> > I have a question regarding arrays and the way I can use a value.
> >
> > Let's say I have this string:
> >
> > $s = 'banana,apple,mellon,grape,nut,orange'
> >
> > I want to explode it, and get the third value. For this I would normally
> do:
> >
> > $a = explode(',', $s);
> > echo $s[2];
> >
> > That's all fine, but is there a way to get the value directly, without
> > having to write another line in my script. I mean something like this:
> >
> > echo explode(',', $s)[2];
> >
> > or
> >
> > echo {explode(',', $s)}[2];
> >
> > I couldn't find out this answer anywhere, that's why I posted here.
>
> Unfortunately, no --- at least, not yet.  Chaining discussions
> come up now and again, so it's quite possible that future versions of
> PHP will have something similar.  That said, for now you could do
> something like this:
>
>  /**
>  * mixed return_item( string $car, mixed $pos )
>  *  - $str The original string
>  *  - $charThe delimiting character(s) by which to explode
>  *  - $pos The position to return
>  *  - $shift   Whether or not we should see 1 as the first array position
>  */
> function return_item($str,$char,$pos=null,$shift=false) {
>
>// Make sure $char exists in $str, return false if not.
>if (!strpos($str,$char)) return false;
>
>// Split $char by $str into the array $arr
>$arr = explode($char,$str);
>
>// If $pos undefined or null, return the whole array
>if (is_null($pos)) return $arr;
>
>// If $pos is an array, return the requested positions
>if (isset($pos) && is_array($pos) && !empty($pos)) {
>
>// Instantiate a second array container for return
>$ret = array();
>
>// Iterate
>foreach ($pos as $i) {
>
>// This is just in case it was given screwy or a number as
> a non-integer
>if (!is_int($i) && is_numeric($i)) $i = (int)round($i);
>
>// Make sure $i is now an integer and that position exists
>if (!is_int($i) || !isset($arr[$i]) || empty($arr[$i]))
> continue;
>
>// If all seems okay, append this to $ret
>$ret[] = $arr[$i];
>}
>
>// Return the array
>return $ret;
>}
>
>/**
>  * If $pos is a number (integer or round()'able number),
>  * we'll go ahead and make sure the position is there.
>  * If so, we'll return it.
>  */
>if (is_int($pos) || is_numeric($pos)) {
>
>// This is just in case it was given screwy or as a non-integer
>if (!is_int($pos)) $pos = (int)round($pos);
>
>// If we want to start the array count at 1, do that now
>if (isset($shift) && ($shift === true || $shift === 1)) {
>
>//  but only if the number isn't zero
>if ($pos !== 0) --$pos;
>
>}
>
>// Return the single position if it exists
>if (isset($arr[$pos]) && !empty($arr[$pos])) return $arr[$pos];
>}
>
>/**
> * If we've failed every case, something is either
> * wrong or we supplied bad data.  Return false.
> * Either way, feel free to add some trigger_error()
> * stuff here if you want to have the function hold
> * your hand.
> */
>return false;
> }
>
>
>
> /**
>  * Some simple examples
>  */
>
> $foo =
> 'apple,banana,carrot,orange,carrot,lettuce,tomato,beer,carrot,idiot';
>
> return_item($foo,',',7); // Returns 'beer'
> return_item($foo,'carrot',0); // Returns 'apple,banana,'
> return_item($foo,','); // Returns all items in an array
> return_item($foo,',',array(0,'2',6.6)); // Returns array: apple,carrot,beer
> return_item($foo,',',1,true); // Returns 'apple'
> ?>
>
>
>Of course, as with almost all code I submit here, it's typed
> directly into this window and is untested, so you use it at your own
> risk, your mileage may vary, see a doctor if you have an erection
> lasting more than four hours, et cetera.
>
>Happy Friday, all.
>
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> 
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>
>

Re: [PHP] array question

[Daniel Brown]

On Fri, Dec 17, 2010 at 15:52, Sorin Buturugeanu  wrote:
> Hello all!
>
> I have a question regarding arrays and the way I can use a value.
>
> Let's say I have this string:
>
> $s = 'banana,apple,mellon,grape,nut,orange'
>
> I want to explode it, and get the third value. For this I would normally do:
>
> $a = explode(',', $s);
> echo $s[2];
>
> That's all fine, but is there a way to get the value directly, without
> having to write another line in my script. I mean something like this:
>
> echo explode(',', $s)[2];
>
> or
>
> echo {explode(',', $s)}[2];
>
> I couldn't find out this answer anywhere, that's why I posted here.

Unfortunately, no --- at least, not yet.  Chaining discussions
come up now and again, so it's quite possible that future versions of
PHP will have something similar.  That said, for now you could do
something like this:




Of course, as with almost all code I submit here, it's typed
directly into this window and is untested, so you use it at your own
risk, your mileage may vary, see a doctor if you have an erection
lasting more than four hours, et cetera.

Happy Friday, all.

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RE: [PHP] array question

[Jay Blanchard]

[snip]
I have a question regarding arrays and the way I can use a value.

Let's say I have this string:

$s = 'banana,apple,mellon,grape,nut,orange'

I want to explode it, and get the third value. For this I would normally
do:

$a = explode(',', $s);
echo $s[2];

That's all fine, but is there a way to get the value directly, without
having to write another line in my script. I mean something like this:

echo explode(',', $s)[2];

or

echo {explode(',', $s)}[2];

I couldn't find out this answer anywhere, that's why I posted here.
[/snip]

Because the array is not formed until after the explode you cannot do it
with one command, but you could place 2 commands on one line :)

$a = explode(',', $s); echo $a[2];

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[PHP] array question

[Sorin Buturugeanu]

Hello all!

I have a question regarding arrays and the way I can use a value.

Let's say I have this string:

$s = 'banana,apple,mellon,grape,nut,orange'

I want to explode it, and get the third value. For this I would normally do:

$a = explode(',', $s);
echo $s[2];

That's all fine, but is there a way to get the value directly, without
having to write another line in my script. I mean something like this:

echo explode(',', $s)[2];

or

echo {explode(',', $s)}[2];

I couldn't find out this answer anywhere, that's why I posted here.

Cheers and thanks!

Re: [PHP] How to define a data range for graphing?

[Peter Lind]

On Friday, 17 December 2010, Simon J Welsh  wrote:
> On 18/12/2010, at 8:45 AM, Brian Dunning wrote:
>
>> Hey all -
>>
>> I'm trying to provide reporting to users of our widget. Some may get 0 to 5 
>> hits a day; others may get up to 10,000 hits a day. I need to define the 
>> range of the graph (using one of Google's). If their max day is 7, I'd like 
>> the graph to go from 0 to 10. If their max day is 5678, I'd probably like it 
>> to go from 0 to 6000. I'm guessing the way to do this is with a ceiling 
>> function?
>>
>> - Brian
>> --
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>> To unsubscribe, visit: http://www.php.net/unsub.php
>>
>
> Personally, I'd use something like:
>
> if($hits < 10) {
>         $top = 10;
> } else {
>         $top = ($hits[0] + 1) * pow(10, strlen($hits) - 1);
> }
>
> Basically, add one to the first digit and make the rest of the digits 0. 
> Depending on how you want to handle the cases ending in 0s, you may want an 
> extra check in there.
>
> General disclaimer about code typed directly into mail client.
>
> Happy Saturday :)

Personally I'd add a percentage on top, say 5 or 10 percent.

Regards
Peter

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Re: [PHP] How to define a data range for graphing?

[Simon J Welsh]

On 18/12/2010, at 8:45 AM, Brian Dunning wrote:

> Hey all -
> 
> I'm trying to provide reporting to users of our widget. Some may get 0 to 5 
> hits a day; others may get up to 10,000 hits a day. I need to define the 
> range of the graph (using one of Google's). If their max day is 7, I'd like 
> the graph to go from 0 to 10. If their max day is 5678, I'd probably like it 
> to go from 0 to 6000. I'm guessing the way to do this is with a ceiling 
> function?
> 
> - Brian
> --
> PHP General Mailing List (http://www.php.net/)
> To unsubscribe, visit: http://www.php.net/unsub.php
> 

Personally, I'd use something like:

if($hits < 10) {
$top = 10;
} else {
$top = ($hits[0] + 1) * pow(10, strlen($hits) - 1);
}

Basically, add one to the first digit and make the rest of the digits 0. 
Depending on how you want to handle the cases ending in 0s, you may want an 
extra check in there.

General disclaimer about code typed directly into mail client.

Happy Saturday :)
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Admin of http://simon.geek.nz/

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[PHP] How to define a data range for graphing?

[Brian Dunning]

Hey all -

I'm trying to provide reporting to users of our widget. Some may get 0 to 5 
hits a day; others may get up to 10,000 hits a day. I need to define the range 
of the graph (using one of Google's). If their max day is 7, I'd like the graph 
to go from 0 to 10. If their max day is 5678, I'd probably like it to go from 0 
to 6000. I'm guessing the way to do this is with a ceiling function?

- Brian
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Re: [PHP] Problems w/ goto

[la...@garfieldtech.com]

On 12/17/10 11:57 AM, Steve Staples wrote:


I had to show the people in my office, and we all got a chuckle from teh
XKCD comic in the PHP documentation for GOTO
http://ca2.php.net/goto

Steve


I was one of the people that argued in favour of GOTO on the Internals
list a few years ago. GOTO has a use, and a very good one at that. It is
by far the most efficient construct when creating parsers or other
similar types of logic flow. The demonized GOTO of the 80s was primarily
due to jumping to arbitrary points in the code, or in the case of basic
to arbitrary line numbers in the code which had little meaning for
future readers. When used properly within a well defined scope and with
well named labels, GOTO can be a superior choice. If you think GOTO
doesn't exist in many types of software, you need only grep for it in
the C source code for PHP, MySQL, and Apache.

Cheers,
Rob.


Oh, i can see where it would be useful, i just hadn't realized it was
still in existence...   and the cartoon, was blown up, and put in my
cubical :)

RAWR!!


It's really a labeling problem.  Goto usually refers to "jump to 
arbitrary line", at least when used in the vernacular.  That's horribly 
bad and evil.


What PHP has implemented is "named break statements", as I understand 
it.  Those are not inherently evil.  It doesn't break program flow any 
more than an exception does, but it's useful for non-error-handling 
cases.  However, it reuses the keyword "goto" which is easy to confuse 
with the abomination above.


It was a rather poor choice of name, frankly.

--Larry Garfield

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Re: [PHP] Problems w/ goto

[Daniel P. Brown]

On Fri, Dec 17, 2010 at 12:22, Robert Cummings  wrote:
>
> I was one of the people that argued in favour of GOTO on the Internals list
> a few years ago. GOTO has a use, and a very good one at that. It is by far
> the most efficient construct when creating parsers or other similar types of
> logic flow. The demonized GOTO of the 80s was primarily due to jumping to
> arbitrary points in the code, or in the case of basic to arbitrary line
> numbers in the code which had little meaning for future readers.

Not to mention failure to properly break, as in the OP's code example.

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[PHP] Re: [PHP-DB] Re: [PHP] Problems w/ goto

[Daniel Brown]

On Fri, Dec 17, 2010 at 12:16, Richard Quadling  wrote:
>
> And have you seen all the sad faces ...
>
> : {
>
> on http://docs.php.net/manual/en/control-structures.goto.php#92763
>
> Can't be good for them.

If only people knew how many hours - literally, hours - it took me
to keep that page clean and free from vandalism after GOTO was
introduced.

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Re: [PHP] Problems w/ goto

[Steve Staples]

On Fri, 2010-12-17 at 12:22 -0500, Robert Cummings wrote:
> On 10-12-17 12:08 PM, Steve Staples wrote:
> > On Fri, 2010-12-17 at 10:50 -0600, Jay Blanchard wrote:
> >> [snip]
> >> Thank you with your excellent help in the past.  Here is another
> >> puzzler
> >>
> >> I am trying to write a program that can have two(2) independent forms
> >> in one PHP file.  When I run the code below [from PHP - A Beginner's
> >> Guide], to which I have added a second form, it freezes.  Without the
> >> goto statements, it runs.  When it does run, it displays both forms
> >> on one Web screen. What I desire is for the first form to be
> >> displayed, the data entered and then the second form displayed.  In
> >> an actual, not test program like this one, the data in the second
> >> form would be dependent on the first form.
> >>
> >> What did I do wrong?
> >> [/snip]
> >>
> >> You used GOTO.
> >>
> >> In this case I would recommend using something like jQuery to 'hide' one
> >> form until the other form is complete. PHP has sent the output to the
> >> browser already, both forms are there and display when you remove the
> >> GOTO.
> >>
> >> GOTO should never be used like this.
> >>
> >> GOTO should never be used.
> >>
> >
> > Wow... that brought me back to 1990... using basic and batch files...
> > I honestly didn't even know that the GOTO was still in existence,
> > especially within PHP.
> >
> > I had to show the people in my office, and we all got a chuckle from teh
> > XKCD comic in the PHP documentation for GOTO
> > http://ca2.php.net/goto
> >
> > Steve
> 
> I was one of the people that argued in favour of GOTO on the Internals 
> list a few years ago. GOTO has a use, and a very good one at that. It is 
> by far the most efficient construct when creating parsers or other 
> similar types of logic flow. The demonized GOTO of the 80s was primarily 
> due to jumping to arbitrary points in the code, or in the case of basic 
> to arbitrary line numbers in the code which had little meaning for 
> future readers. When used properly within a well defined scope and with 
> well named labels, GOTO can be a superior choice. If you think GOTO 
> doesn't exist in many types of software, you need only grep for it in 
> the C source code for PHP, MySQL, and Apache.
> 
> Cheers,
> Rob.

Oh, i can see where it would be useful, i just hadn't realized it was
still in existence...   and the cartoon, was blown up, and put in my
cubical :)

RAWR!!


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Re: [PHP] Problems w/ goto

[Daniel Brown]

On Fri, Dec 17, 2010 at 11:38, Ethan Rosenberg  wrote:
>
> I am trying to write a program that can have two(2) independent forms in one
> PHP file.  When I run the code below [from PHP - A Beginner's Guide], to
> which I have added a second form, it freezes.
[snip!]
> What did I do wrong?

You presumed that "A Beginner's Guide" meant that it was a book
for beginners not one written by a beginner.  Firstly, while GOTO
has a place in programming for certain things, the example (and I can
see the difference between the original and your additions) is
atrocious, and is not at all representative of any code you would
ever, ever want to put into production.  That looks like a nightmare
of taking a math final, not knowing the answer, and suddenly realizing
you're in your underwear --- and have explosive uncontrollable
diarrhea on top of it, and your ankles are chained to the chair.  Who
is the author?  I saw one on Amazon by Vikram Vaswani, but there was
no use of GOTO that I could find there.  I'd like to see what other
"tips" are included, or perhaps to see if that code was used in a
different context (as in, "what will work, but what not to do anyway,"
or, "I wrote this on April Fool's Day").

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Re: [PHP] HTML id attribute and arrays

[Benjamin Hawkes-Lewis]

Martin C  wrote:
> How should I follow the HTML specification while having the passed
> parameters automatically converted to arrays in PHP?

The "name" attribute, not the "id" attribute, is used as the key when
submitting form values.

The "name" and "id" attributes do not have to be the same.

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[PHP] HTML id attribute and arrays

[Martin C]

Hi,

PHP converts x[a]=b parameter of the HTTP request as an array named x 
with its item named a set to value b. So, it seems possible to have the 
following (X)HTML code:


Unfortunatelly, HTML specification does not allow neither "[" nor "]" 
inside the id attribute. Specifically:

* Must begin with a letter A-Z or a-z
* Can be followed by: letters (A-Za-z), digits (0-9), hyphens ("-"), 
underscores ("_"), colons (":"), and periods (".")

* Values are case-sensitive

How should I follow the HTML specification while having the passed 
parameters automatically converted to arrays in PHP?


Thank you for any tips,

Martin

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Re: [PHP] Problems w/ goto

[Robert Cummings]

On 10-12-17 12:08 PM, Steve Staples wrote:

On Fri, 2010-12-17 at 10:50 -0600, Jay Blanchard wrote:

[snip]
Thank you with your excellent help in the past.  Here is another
puzzler

I am trying to write a program that can have two(2) independent forms
in one PHP file.  When I run the code below [from PHP - A Beginner's
Guide], to which I have added a second form, it freezes.  Without the
goto statements, it runs.  When it does run, it displays both forms
on one Web screen. What I desire is for the first form to be
displayed, the data entered and then the second form displayed.  In
an actual, not test program like this one, the data in the second
form would be dependent on the first form.

What did I do wrong?
[/snip]

You used GOTO.

In this case I would recommend using something like jQuery to 'hide' one
form until the other form is complete. PHP has sent the output to the
browser already, both forms are there and display when you remove the
GOTO.

GOTO should never be used like this.

GOTO should never be used.



Wow... that brought me back to 1990... using basic and batch files...
I honestly didn't even know that the GOTO was still in existence,
especially within PHP.

I had to show the people in my office, and we all got a chuckle from teh
XKCD comic in the PHP documentation for GOTO
http://ca2.php.net/goto

Steve


I was one of the people that argued in favour of GOTO on the Internals 
list a few years ago. GOTO has a use, and a very good one at that. It is 
by far the most efficient construct when creating parsers or other 
similar types of logic flow. The demonized GOTO of the 80s was primarily 
due to jumping to arbitrary points in the code, or in the case of basic 
to arbitrary line numbers in the code which had little meaning for 
future readers. When used properly within a well defined scope and with 
well named labels, GOTO can be a superior choice. If you think GOTO 
doesn't exist in many types of software, you need only grep for it in 
the C source code for PHP, MySQL, and Apache.


Cheers,
Rob.
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Re: [PHP] Problems w/ goto

[Nicholas Kell]

On Dec 17, 2010, at 11:08 AM, Steve Staples wrote:

[snip /]

>> 
>> 
>> GOTO should never be used like this.
>> 
>> GOTO should never be used.
>> 
> 
> Wow... that brought me back to 1990... using basic and batch files...
> I honestly didn't even know that the GOTO was still in existence,
> especially within PHP.
> 
> I had to show the people in my office, and we all got a chuckle from teh
> XKCD comic in the PHP documentation for GOTO
> http://ca2.php.net/goto
> 
> Steve

I didn't know it existed in PHP either. The cartoon is priceless. I should 
probably hang that up in my office somewhere.

Re: [PHP] Problems w/ goto

[Richard Quadling]

On 17 December 2010 17:08, Steve Staples  wrote:
> On Fri, 2010-12-17 at 10:50 -0600, Jay Blanchard wrote:
>> [snip]
>> Thank you with your excellent help in the past.  Here is another
>> puzzler
>>
>> I am trying to write a program that can have two(2) independent forms
>> in one PHP file.  When I run the code below [from PHP - A Beginner's
>> Guide], to which I have added a second form, it freezes.  Without the
>> goto statements, it runs.  When it does run, it displays both forms
>> on one Web screen. What I desire is for the first form to be
>> displayed, the data entered and then the second form displayed.  In
>> an actual, not test program like this one, the data in the second
>> form would be dependent on the first form.
>>
>> What did I do wrong?
>> [/snip]
>>
>> You used GOTO.
>>
>> In this case I would recommend using something like jQuery to 'hide' one
>> form until the other form is complete. PHP has sent the output to the
>> browser already, both forms are there and display when you remove the
>> GOTO.
>>
>> GOTO should never be used like this.
>>
>> GOTO should never be used.
>>
>
> Wow... that brought me back to 1990... using basic and batch files...
> I honestly didn't even know that the GOTO was still in existence,
> especially within PHP.
>
> I had to show the people in my office, and we all got a chuckle from teh
> XKCD comic in the PHP documentation for GOTO
> http://ca2.php.net/goto
>
> Steve
>
>
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> To unsubscribe, visit: http://www.php.net/unsub.php
>
>

And have you seen all the sad faces ...

: {

on http://docs.php.net/manual/en/control-structures.goto.php#92763

Can't be good for them.

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RE: [PHP] Problems w/ goto

[Steve Staples]

On Fri, 2010-12-17 at 10:50 -0600, Jay Blanchard wrote:
> [snip]
> Thank you with your excellent help in the past.  Here is another
> puzzler
> 
> I am trying to write a program that can have two(2) independent forms 
> in one PHP file.  When I run the code below [from PHP - A Beginner's 
> Guide], to which I have added a second form, it freezes.  Without the 
> goto statements, it runs.  When it does run, it displays both forms 
> on one Web screen. What I desire is for the first form to be 
> displayed, the data entered and then the second form displayed.  In 
> an actual, not test program like this one, the data in the second 
> form would be dependent on the first form.
> 
> What did I do wrong?
> [/snip]
> 
> You used GOTO. 
> 
> In this case I would recommend using something like jQuery to 'hide' one
> form until the other form is complete. PHP has sent the output to the
> browser already, both forms are there and display when you remove the
> GOTO. 
> 
> GOTO should never be used like this.
> 
> GOTO should never be used.
> 

Wow... that brought me back to 1990... using basic and batch files...
I honestly didn't even know that the GOTO was still in existence,
especially within PHP.

I had to show the people in my office, and we all got a chuckle from teh
XKCD comic in the PHP documentation for GOTO
http://ca2.php.net/goto

Steve


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Re: [PHP] String passed to object constructor turning into aninstance of that object?

[Kris Deugau]

Nathan Nobbe wrote:

 2. try modifying Tag & SelectBoxOption to have __construct() instead of

Tag() & SelectBoxOption(), then call parent::__construct() from inside
of SelectBoxOption::__construct(); see if that clears up your problem
under
5.2 (read: this will only be a partial solution as it only addresses one
child of Tag).


Mmm.  I hoped this would help, but all it seems to have done was cascade
errors across the rest of Tag's object children.  :(



to be expected, but did it fix the problem w/ SelectBoxOption?


I'm not sure, but I don't think so;  the original symptom was "Object of 
class SelectBoxOption could not be converted to string" - the original 
code didn't include a toString() method in SelectBoxOption, and since 
the code works on an older PHP, it must be using the parent object's 
toString().  (Which some children of Tag do explicitly, but 
SelectBoxOption doesn't for whatever reason.)


In trying to add the toString() method, I found that the calls used by 
other tags to retrieve the HTML tag name, value, etc weren't working. 
So I looked up at the constructor to see if the pieces passed in were 
getting passed and stored correctly - and quite obviously they're not 
($name mutates into what looks like an array with a string at [0] and 
something closely resembling what the whole object instance *should* be 
at [1], and $value just seems to disappear).


Putting aside actually fixing the constructor correctly, after a bit of 
poking I found that $this->tagContent->.  works to retrieve the data 
and actually output the  tag correctly.


var_dump tells me that the real data is actually in there...  it's 
"just" not instantiated correctly.  $name apparently arrives at the 
constructor for SelectOptionBox like this:


string(8) "Abegweit"
object(SelectBoxOption)#65 (5) {
  ["attributes"]=>
  array(1) {
[0]=>
object(TagAttribute)#66 (3) {
  ["name"]=>
  string(5) "value"
  ["value"]=>
  string(1) "4"
  ["hasValue"]=>
  bool(true)
}
  }
  ["tagContent"]=>
  string(8) "Abegweit"
  ["tag"]=>
  string(6) "option"
  ["showEndTag"]=>
  bool(false)
  ["children"]=>
  array(0) {
  }
}


I'll try converting all of the constructors to your recommendation as
above, but given that the problem is only happening with this one class, I'm
not sure that will do much.



hopefully that clears it up ..


Well, I ran out of "Call to undefined ParentClass::parentclass in 
path/to/file/for/subclass.php" errors (at least on the page I'm testing 
with)  but $name is still going in on the calling side as a string, 
and coming out as a funky array.



and hopefully you're using version control :D


Bah!  Real man never make mistaaake!

... ooops.  

(I've got the live site, on the old server, as reference, plus the 
regular backups of that machine.)


-kgd

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RE: [PHP] Problems w/ goto

[Jay Blanchard]

[snip]
Thank you with your excellent help in the past.  Here is another
puzzler

I am trying to write a program that can have two(2) independent forms 
in one PHP file.  When I run the code below [from PHP - A Beginner's 
Guide], to which I have added a second form, it freezes.  Without the 
goto statements, it runs.  When it does run, it displays both forms 
on one Web screen. What I desire is for the first form to be 
displayed, the data entered and then the second form displayed.  In 
an actual, not test program like this one, the data in the second 
form would be dependent on the first form.

What did I do wrong?
[/snip]

You used GOTO. 

In this case I would recommend using something like jQuery to 'hide' one
form until the other form is complete. PHP has sent the output to the
browser already, both forms are there and display when you remove the
GOTO. 

GOTO should never be used like this.

GOTO should never be used.

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Re: [PHP] String passed to object constructor turning into aninstance of that object?

[Kris Deugau]

David Harkness wrote:

I've never used the old-style constructors, but perhaps the semantics of
"parent::" changed and you need to instead use "$this->" as in

$this->Tag("option", $name);

That's a total guess. I don't have 5.2 handy to try it out, but both work in
5.3 using a simple example. Can you post the constructor of one of the Tag
subclasses that work? Maybe we can find a common denominator.


The most similar is Column, but all of them do very similar things - 
it's just the one class that seems to take a string and mutate it into 
what looks like an array with a string at [0] and something closely 
resembling what the whole object instance *should* be at [1].


class Table extends Tag {
function Table() {
parent::Tag('table');

$this->addAttribute('cellspacing', 0);
$this->addAttribute('cellpadding', 0);
$this->addAttribute('border', 0);

$this->columns = array();
$this->rows = array();
}

class Row extends Tag {
function Row($table='') {
parent::Tag('tr');

$this->table = '';
}

class Column extends Tag {
function Column($data) {
parent::Tag('td', $data);

$this->tagContent = $data;
}

class FormObject extends Tag {
function FormObject($name='') {
parent::Tag();

$this->addAttribute("name", $name);
$this->name = $name;
}


-kgd

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[PHP] Problems w/ goto

[Ethan Rosenberg]

Dear List -

I am sending this again since it does not seem to have posted.

Ethan
+++
Dear List -

Thank you with your excellent help in the past.  Here is another puzzler

I am trying to write a program that can have two(2) independent forms 
in one PHP file.  When I run the code below [from PHP - A Beginner's 
Guide], to which I have added a second form, it freezes.  Without the 
goto statements, it runs.  When it does run, it displays both forms 
on one Web screen. What I desire is for the first form to be 
displayed, the data entered and then the second form displayed.  In 
an actual, not test program like this one, the data in the second 
form would be dependent on the first form.


What did I do wrong?

Thanks in advance.

Here is the code:



http://www.w3.org/1999/xhtml"; xml:lang="en" lang="en">
  
Project 4-4: Age Calculator
  
  
Project 4-4: Age Calculator
";
echo "  Enter your date of birth, in mm/dd/ format: ";
echo "  ";
echo "  ";
echo "  ";
echo "  ";

goto begin;
// if form submitted
// process form input
}
else
{
starter:
if (isset($_POST['cat']))
goto purr;
  // split date value into components
  $dateArr = explode('/', $_POST['dob']);

  // calculate timestamp corresponding to date value
  $dateTs = strtotime($_POST['dob']);

  // calculate timestamp corresponding to 'today'
  $now = strtotime('today');

  // check that the value entered is in the correct format
  if (sizeof($dateArr) != 3) {
die('ERROR: Please enter a valid date of birth');
  }

  // check that the value entered is a valid date
  if (!checkdate($dateArr[0], $dateArr[1], $dateArr[2])) {
die('ERROR: Please enter a valid date of birth');
  }

  // check that the date entered is earlier than 'today'
  if ($dateTs >= $now) {
die('ERROR: Please enter a date of birth earlier than today');
  }

  // calculate difference between date of birth and today in days
  // convert to years
  // convert remaining days to months
  // print output
  $ageDays = floor(($now - $dateTs) / 86400);
  $ageYears = floor($ageDays / 365);
  $ageMonths = floor(($ageDays - ($ageYears * 365)) / 30);
  echo "You are approximately $ageYears years and $ageMonths months old.";
  goto meow;
 }

meow:
if (!isset($_POST['dob']))
goto begin;
if (!isset($_POST['cat']))
{


echo "  ";
echo "  Enter your kitten's name: ";
echo "  ";
echo "  ";
echo "  Kitten\" />";

echo "";

}
else
{
purr:
$name_cat = $_POST['cat'];

echo "Your Kitten is $name_cat";
$ender = 1;
}
if ($ender == 0)
goto begin;
first_step:
?>

  




Ethan

MySQL 5.1  PHP 5  Linux [Debian (sid)]  




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Re: [PHP]Confusion About WordPress Cache

[Daniel Brown]

On Fri, Dec 17, 2010 at 09:32, Nicholas Kell  wrote:
> On Dec 17, 2010, at 8:21 AM, 肖晗 wrote:
>> I am using WordPress Cache to cache data retrieved from database, using
>> WP_Cache .
[snip!]
>>
>> Can anyone help? Or it is not what I am thinking. *Is there any way to
>> retrieve the same data which has been saved *
>
> I am not by any means saying that everyone here does not know the answer. 
> Correct me if I am wrong, but this seems like a bit more of a specifically WP 
> question than a PHP question, and  you may get a better response from one of 
> the WP mailing lists.
>
> http://codex.wordpress.org/Mailing_Lists

Exactly.

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Re: [PHP] PHPInfo disabled due to security

[Daniel Brown]

On Thu, Dec 16, 2010 at 23:39, Paul S  wrote:
>
> Well, I was hoping for stronger arguments to get that DONE. I would think
> there be something in the PHP license
> that would FORBID disabling functionality.

Really?  You would really think that?  Because we wouldn't.

> After all, 'phpinfo' is essential, really, to achieving secure
> applications, isn't it?

No.  Writing good code is essential.

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Re: [PHP]Confusion About WordPress Cache

[Nicholas Kell]

On Dec 17, 2010, at 8:21 AM, 肖晗 wrote:

> I am using WordPress Cache to cache data retrieved from database, using
> WP_Cache .
> 
> After I  used wp_cache_set to set some data in the cache, I try to get it by
> wp_cache_get in ANOTHER post request.
> 
> However, it failed to retrieve the data I have previously saved.
> 
> It is ok if I try to retrieve the data in just one request(place the *set*and
> *get * in the same script). *However, in separate *
> *
> *
> *requests, I doesn't work.*
> 
> I wonder if I got the wrong idea of what *cache* is. I have it in mind that
> *cache *can be preserved even in different requests
> 
> from the same user.*Then the cache has nothing different with a variable, I
> think!!*
> 
> And I am doubting my idea now!
> 
> Can anyone help? Or it is not what I am thinking. *Is there any way to
> retrieve the same data which has been saved *
> *
> *
> *before(not using database) in separate requests? *
> 
> 
> Really thanks for any response!
> 
> Best regards!
> 
> Xiaohan


I am not by any means saying that everyone here does not know the answer. 
Correct me if I am wrong, but this seems like a bit more of a specifically WP 
question than a PHP question, and  you may get a better response from one of 
the WP mailing lists.

http://codex.wordpress.org/Mailing_Lists

Re: [PHP] PHPInfo disabled due to security

[Nicholas Kell]

On Dec 16, 2010, at 10:39 PM, Paul S wrote:

> On Thu, 16 Dec 2010 00:13:31 +0700, "Daniel P. Brown"
>  wrote:
> 
> 
>> 
>>Well, phpinfo() does, by default, divulge some things that could
>> be considered security concerns --- particularly in poorly-managed
>> environments.  Primarily, this is by giving a synopsis of versions and
>> paths of software, but some versions and configurations will also
>> broadcast information about the currently logged-in user (PTS/TTY) in
>> the $_ENV display.  Sure, you can display everything manually that
>> phpinfo() does automatically, but it's easier for some to vilify
>> something because they heard it was bad than to actually address the
>> greater issues.
>> 
>>In cases like this, I'd agree with Al's response; there are plenty
>> of other web hosts out there.
>> 
> 
> Well, I was hoping for stronger arguments to get that DONE. I would think
> there be something in the PHP license
> that would FORBID disabling functionality. After all, 'phpinfo' is
> essential, really, to achieving secure
> applications, isn't it? My setups are secure, I want to keep it that way.
> Shouldn't hosters be required
> to provide an alternative phpinfo, say behind the login control panel?

I don't know that I would say that phpinfo() is essential. Helpful, yes. A pain 
in the neck when you need it and you don't have it - absolutely. But, there are 
ways around it. As daniel had mentioned already, you can call it all manually. 
If changing hosting is a problem, sit down, take an hour and write your own 
phpinfo(), all the info you need is in the manual.

> I can't see that anyone could upload a phpinfo command to a properly
> configured server and execute it. I have
> renamed my 'phpinfo.php' file to something innocuous.

You have taken precautions, but it doesn't mean that another fella on the same 
server did.

> Unfortunately I've found changing hosting companies to often result in a
> lot of work for just as
> obnoxious tech service as the last.

Perhaps writing a bit more portable code would alleviate the extra work. Of 
course, I do not know your specific situation, so it is not my call if it is 
even possible. But, the software engineer in me says to spend extra time 
writing code that can move from server to server easily.
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[PHP]Confusion About WordPress Cache

[肖晗]

I am using WordPress Cache to cache data retrieved from database, using
WP_Cache .

After I  used wp_cache_set to set some data in the cache, I try to get it by
wp_cache_get in ANOTHER post request.

However, it failed to retrieve the data I have previously saved.

It is ok if I try to retrieve the data in just one request(place the *set*and
*get * in the same script). *However, in separate *
*
*
*requests, I doesn't work.*

I wonder if I got the wrong idea of what *cache* is. I have it in mind that
*cache *can be preserved even in different requests

from the same user.*Then the cache has nothing different with a variable, I
think!!*

And I am doubting my idea now!

Can anyone help? Or it is not what I am thinking. *Is there any way to
retrieve the same data which has been saved *
*
*
*before(not using database) in separate requests? *


Really thanks for any response!

Best regards!

Xiaohan