How to get a subset of $_POST array with keys starting with a prefix

Question

Let\'s say my $_POST variable looks like:

 65
    [action] => editpost
    [originalaction] => editpo         


        

Answer 1

function GetPrefixedItemsFromArray($array, $prefix, $remplacePref=FALSE)    {
    $keys = array_keys($array);
    $result = array();

    foreach ($keys as $key) {
        if (strpos($key,$prefix) === 0) {
            if($remplacePref===TRUE){
                $result[str_replace($prefix, "", $key)] = $array[$key];
            }
            elseif($remplacePref!==FALSE && $remplacePref!==""){
                $result[str_replace($prefix, $remplacePref, $key)] = $array[$key];
            }
            else{
                $result[$key] = $array[$key];
            }               
        }
    }
    return $result;
}

Then simply call with $myArray = GetPrefixedItemsFromArray($POST, "empl");.