What does $url= $url[1] do?

I'm trying to debug a Drupal template and don't understand what this line of code does:

if(is_array($url)) $url = $url[1];

 

If the $url variable is an array it will convert it to whatever is in the second element of the array (position 1) - probably a string.

 

It'll convert url to a variable, containing second element of it's current array.

 

if(is_array($url)) //tests to see if the varaible is an array

$url = $url[1]; //if $url is an array, than $url will be converted to string with the value from the $url array from position 1.

Eg.:

$url[0]="hello"
$url[1]="man"
$url[2]="what are you doing?"

if the array looks like that, after you execute the piece of code from above, you will get :
$url=$url[1] -> $url="man"

Hope it helps,
Vlad

 

Ok, got it. It confused me seeing an array set equal to an element of the array. But the result is it converts the array to a string. Thanks guys.

 

PHP is not a typed language, array variables can become strings and so on. Read http://us3.php.net/manual/en/language.types.type-juggling.php for more info.