Replace a key in an associative array, preserving the original order of keys and elements:

gistfile1.txt

<?php 
if (!function_exists('array_combine')) { // ONLY EXISTS IN PHP5 
    function array_combine($keys, $values) { 
        if (count($keys) != count($values)) { 
    return false; } 
        foreach($keys as $key) { $array[$key] = array_shift($values); } 
    return $array; }    
} // END IF FUNCTION EXISTS 

$keys = array_keys($array); 
$values = array_values($array); 
foreach ($keys as $k => $v) { 
    if ($v == "MANAGEMENT FEE CHARGE") { $keys[$k] = "MANAGEMENT FEES"; } 
} 
$array = array_combine($keys, $values); 
?>