Re: re-keying an array

Justin Patrin wrote:

Richard Harb wrote:

Uh, I was wrong... Foreach evaluates only once at initialisation... You can even unset the array once into the loop and it still works perfectly well (not that I recommend this as good practice or whatever, just did some checking to be sure :) Richard

That will work because foreach iterates over a copy of the array. I often do things like: foreach($arr as $key => $val) { if(some condition) {

    unset($arr[$key]);

} }

Just one other thought. For those of you using PHP5, you can change the actual values in an array by using a reference. foreach ($arr as $key => &$val) { if ($condition) {

    $val = $newval;

} } Putting the & in front of the $val tells PHP to use references, which would change the values of the original array. Just another way to skin a cat :)