don't understand this code

[Mr.Shawn]

$requested = empty($_SERVER['REQUEST_URI']) ? false : $_SERVER['REQUEST_URI'];

 

What does the above code means?

 

What's with the ? and :

[rlindauer]

Look up the ternary operator.

 

http://us3.php.net/language.operators.comparison

 

[phpknight]

It means if that if $_SERVER['REQUEST_URI'] is not set, then $requested is false.  Otherwise, it is set to its value.  

 

? : is an easy way to do quick if/else syntax

 

 

$value=($number<0)? "negative": "positive";

 

If the condition in (here) is true, the $value gets set to the first value.  If not, it's the second one.  Of course zero is not really positive, but you get the point.

[Mr.Shawn]

Well explained. Thank you so much.

[phpSensei]

you know what, this is how i understood it first

 

$var = ($var == "a") ? "the var $var is now this string" : "If the var does not equal A, then the $var is equalled to this string";