Can someone please explain this syntax? 1

[georgeocrawford]

Hi,

Can someone please explain this syntax which I came across today:

$start = ( isset($_GET["start"]) ) ? $_GET["start"] : 0;

I understand what this does: $start is given the value of "start" as passed to the script from a form. If "start" is not passed, $start is set to "0".

However, I have never come across this syntax:

$x = ...... ? ...... : ... ;

Could someone tell me what this is called, so I can research it on php.net?

many thanks!

George

 

[sleipnir214]

Look here:

http://www.php.net/manual/en/language.expressions.php

about halfway down the page.


Want the best answers? Ask the best questions:

http://www.tuxedo.org/~esr/faqs/smart-questions.html

TANSTAAFL!

 

[georgeocrawford]

Thanks - sorted!

Took you a long time to reply - at least 1 minute!

George

 

[skiflyer]

sleipnir's link is the best information... but for the quick and lazy, look at it like this.

if (isset($_GET["start"])) {
$x = $_GET["start"];
} else {
$x = 0;
}

so........
$x = $1?$2:$3;

if ($1) {
$x = $2;
} else {
$x = $3;
}

 

[sleipnir214]

georgecrawford:

I always have to hunt for that one. You can't just enter "?" in the search block. Want the best answers? Ask the best questions:

http://www.tuxedo.org/~esr/faqs/smart-questions.html

TANSTAAFL!

 

[likeopensource]

hey give a star to sleipnir214

 

[sleipnir214]

likeopensource:

This is the second thread you've posted comments like this today. Are you the Star Police or something? Want the best answers? Ask the best questions:

http://www.tuxedo.org/~esr/faqs/smart-questions.html

TANSTAAFL!

 

[BB101]

Nah, he's just in competition with me --BB