gistfile1.php

    <?php
    class Request
    {
    const TYPE_NONE = 0;
    const TYPE_ALPHA = 1;
    const TYPE_DIGIT = 2;
    const TYPE_ALNUM = 3;
    const GET = 10;
    const POST = 11;
    const COOKIE = 12;
    const SESSION = 13;
    public static function get($name, $method = null, $validation = null)
    {
    if ($method < self::GET && $validation === null) {
    $validation = $method;
    $method = self::GET;
    } else if ($method === null ) {
    $method = self::GET;
    }
    if ($validation === null) {
    $validation = self::TYPE_NONE;
    }
    $holder = null;
    switch ($method) {
    case self::GET:
    $holder = $_GET;
    break;
    case self::POST:
    $holder = $_POST;
    break;
    case self::COOKIE:
    $holder = $_COOKIE;
    break;
    case self::SESSION:
    $holder = $_SESSION;
    break;
    }
    if (!isset($holder[$name])) {
    return false;
    }
    $validator = null;
    switch ($validation) {
    case self::TYPE_ALNUM:
    $validator = 'alnum';
    break;
    case self::TYPE_DIGIT:
    $validator = 'digit';
    break;
    case self::TYPE_ALPHA:
    $validator = 'alpha';
    break;
    }
    $ret_val = $holder[$name];
    $valid_func = 'ctype_' . $validator;
    return (($validator === null) ? $ret_val : (( $valid_func($ret_val) ) ? $ret_val : null ) );
    }
    }