[PHP] convert single itemed sub-arrays into string

2010-08-25T20:45:55-07:00

I tried using array_walk to search through a multidimensional array (5 levels deep) and find any arrays that contain a single item, and if so, convert the array to a string, but it didn't work, can someone re-factor the code, possibly give me a solution that can be as many levels deep and still turn single itemed arrays into a string?

<?php
foreach($final as $key => $val) {
    if (is_array($val) && count($val) == 1) $final[$key] = $val[0];
    if (is_array($val))			
    foreach ($val as $skey=>$sval) {
        if (is_array($sval) && count($sval) == 1) $final[$key][$skey] = $sval[0];
        if (is_array($sval))
        foreach($sval as $sskey=>$ssval) {
            if (is_array($ssval) && count($ssval) == 1) $final[$key][$skey][$sskey] = $ssval[0];
            if (is_array($ssval))
            foreach($ssval as $ssskey=>$sssval) {
                if (is_array($sssval) && count($sssval) == 1) $final[$key][$skey][$sskey][$ssskey] = $sssval[0];
            }
        }
    }
}
?>

[PHP] Trimming excess from string

2010-02-05T16:07:00-08:00

I'm trying to get an input string to get rid of all characters except alpha-numerics, hyphen and a space, then the result i would like any hyphens at the start and at the end removed, also, if there are more than one hyphen in a row, to just replace it with one, and change the whole thing to lower case e.g :

-!! This is a "**Test- -string**" !!!!-

results to :

this-is-a-test-string

The code works fine, but it seems a bit long-winded the way i've done it, can this code be refactored at all?

$outputstr =  preg_replace('/[-]{2,}/','-',trim(strtolower(str_replace(' ','-',preg_replace('/[^A-Z0-9- ]+/i','',$inputstr))),'-'));

paulswansea.myopenid.com

[PHP] convert single itemed sub-arrays into string

[PHP] Trimming excess from string