Re: [PHP] snippet

[Marek Kilimajer]

Everything has been explained, I will just mention this is more 
efficient, as submit() function runs only once:

$sFont =($tmp=submit(font)) ? SITE_ROOT . PROG_PATH . $tmp : ;

Harry Wiens wrote:

can someone explain this for me:
...
$sFont =submit(font) ? SITE_ROOT . PROG_PATH . submit(font) : ;
...
mfg.
hwiens




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Re: [PHP] snippet

[imran]

hi

It is a Ternary Operator, Often you can avoid large if/else statements in
your code by using the ternary operator. For example:


echo You have $i . ($i==1 ? message : messages).  in your box.\n;


Note: ? :  operator has this syntax  expr ? expr : expr;

imran

- Original Message -
From: Harry Wiens [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Tuesday, August 05, 2003 3:26 PM
Subject: [PHP] snippet


 can someone explain this for me:
 ...
 $sFont =submit(font) ? SITE_ROOT . PROG_PATH . submit(font) : ;
 ...

 mfg.
 hwiens



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Re: [PHP] snippet

[David Nicholson]

** CORRECTION BELOW **

Hello,

This is a reply to an e-mail that you wrote on Tue, 5 Aug 2003 at
11:14, lines prefixed by '' were originally written by you.

 $sFont =submit(font) ? SITE_ROOT . PROG_PATH .
submit(font) : ;

it is the same as:
if(submit(font)){
$sFont = SITE_ROOT . PROG_PATH;
} else {
$sFont = ;
}

(see http://uk.php.net/language.operators.comparison)

submit() is a user defined function, if it evaluates to **TRUE**
then
$sFont will contain the value of those two constants put togetherm
otherwise it will be set to an empty string.

HTH

David.


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[PHP] snippet

[Harry Wiens]

can someone explain this for me:
...
$sFont =submit(font) ? SITE_ROOT . PROG_PATH . submit(font) : ;
...

mfg.
hwiens



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Re: [PHP] snippet

[David Nicholson]

Hello,

This is a reply to an e-mail that you wrote on Tue, 5 Aug 2003 at
11:14, lines prefixed by '' were originally written by you.

 $sFont =submit(font) ? SITE_ROOT . PROG_PATH .
submit(font) : ;

it is the same as:
if(submit(font)){
$sFont = SITE_ROOT . PROG_PATH;
} else {
$sFont = ;
}

(see http://uk.php.net/language.operators.comparison)

submit() is a user defined function, if it evaluates to false then
$sFont will contain the value of those two constants put togetherm
otherwise it will be set to an empty string.

HTH

David.


--
phpmachine :: The quick and easy to use service providing you with
professionally developed PHP scripts :: http://www.phpmachine.com/
Free PHP error handling script: www.phpmachine.com/error-handler/

  Professional Web Development by David Nicholson
http://www.djnicholson.com/

QuizSender.com - How well do your friends actually know you?
 http://www.quizsender.com/

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Re: [PHP] snippet

[Jon Haworth]

Hi Harry,

 can someone explain this for me:
 ...
 $sFont =submit(font) ? SITE_ROOT . PROG_PATH . submit(font) : ;
 ...

It's called the ternary operator, and it's a shorthand for if...else...

The line you're asking about is equivalent to:

if (submit(font)) {
  $sFont = SITE_ROOT . PROG_PATH . submit(font);
} else {
  $sFont = ;
}

The format is:
(condition to check) ? (result if true) : (result if false);

Cheers
Jon


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