here is a simple and yet easy to use implementation of this function.
the 'original' function has the problem that you can't unset a value.
with my function, YOU CAN!
<?php
function array_walk_protected(&$a,$s,$p=null)
{
if(!function_exists($s)||!is_array($a))
{
return false;
}
foreach($a as $k=>$v)
{
if(call_user_func_array($s,array(&$a[$k],$k,$p))===false)
{
unset($a[$k]);
}
}
}
function get_name(&$e,$i,$p)
{
echo "$i: $e<br>";
return false;
}
$m=array('d'=>'33','Y'=>55);
array_walk_protected($m,'get_name');
var_dump($m); ?>
i called it array_walk_protected because it is protected against the unexpected behavior of unsetting the value with the original function.
to delete an element, simply return false!!!
nothing else is needed!
unsetting $e, under your created function, will keep the same array as-is, with no changes!
by the way, the function returns false if $a is not array or $s is not a string!
limitations: it only can run user defined functions.
i hope you like it!
