$_GET und $_POST : numeric string zu int

function set_numeric_type($val)
{
    $types = array('integer','float');
// EDITED 10 06 2014    if(is_numeric($val)and (!is_int($val)or !is_float($val))){
    if(is_numeric($val)and is_string($val)){
        foreach($types as $type){
            $temp = $val;
            if(settype($temp,$type)and $temp == $val){
                return $temp;
            }
        }
    }
    return $val;
}




function arrayWalkRecursiveCallUserFunc($arr,$functions)
{
    if(!function_exists('byref')){
        function byref(&$val,&$key,$functions){
            foreach($functions as $function_name){
                $val = call_user_func($function_name,$val);
            }
        }
    }
    $functions = (!is_array($functions))?array($functions):$functions;
    array_walk_recursive($arr,"byref",$functions);
    return $arr;
}




# simulate get (or just add ?a=1 to your url):
$_GET['a'] = '1'; // string(1) "1"




$_GET = arrayWalkRecursiveCallUserFunc($_GET,array('trim','set_numeric_type'));
$_POST = arrayWalkRecursiveCallUserFunc($_POST,array('trim','set_numeric_type'));




var_dump($_GET['a']); // int(1)