1: <?php
 2: 
 3: /**
 4:  * Jyxo PHP Library
 5:  *
 6:  * LICENSE
 7:  *
 8:  * This source file is subject to the new BSD license that is bundled
 9:  * with this package in the file license.txt.
10:  * It is also available through the world-wide-web at this URL:
11:  * https://github.com/jyxo/php/blob/master/license.txt
12:  */
13: 
14: /**
15:  * Validates a URL.
16:  *
17:  * @category Jyxo
18:  * @package Jyxo_Input
19:  * @subpackage Validator
20:  * @copyright Copyright (c) 2005-2011 Jyxo, s.r.o.
21:  * @license https://github.com/jyxo/php/blob/master/license.txt
22:  * @author Jaroslav Hanslík
23:  */
24: class Jyxo_Input_Validator_IsUrl extends Jyxo_Input_Validator_AbstractValidator
25: {
26:     /**
27:      * Validates a value.
28:      *
29:      * @param mixed $value Input value
30:      * @return boolean
31:      */
32:     public function isValid($value)
33:     {
34:         $patternGenericTld = '(?:aero|biz|cat|com|coop|edu|gov|info|int|jobs|mil|mobi|museum|name|net|org|pro|tel|travel|asia|post|geo)';
35:         $patternTld = '(?-i:' . $patternGenericTld . '|[a-z]{2})';
36:         $patternDomain = '(?:(?:[a-z]|[a-z0-9](?:[-a-z0-9]{0,61}[a-z0-9]))[.])*(?:[a-z0-9](?:[-a-z0-9]{0,61}[a-z0-9])[.]' . $patternTld . ')';
37: 
38:         // protocol://user:password@
39:         $patternUrl = '(?:(?:http|ftp)s?://(?:[\S]+(?:[:][\S]*)?@)?)?';
40:         // domain.tld
41:         $patternUrl .= '(?:' . $patternDomain . ')';
42:         // :port/path/file.extension
43:         $patternUrl .= '(?::[0-9]+)?(?:(?:/+[-\w\pL\pN\~.:!%]+)*(?:/|[.][a-z0-9]{2,4})?)?';
44:         // ?query#hash
45:         $patternUrl .= '(?:[?&][\]\[-\w\pL\pN.,?!\~%#@&;:/\'\=+]*)?(?:#[\]\[-\w\pL\pN.,?!\~%@&;:/\'\=+]*)?';
46: 
47:         if (!preg_match('~^' . $patternUrl . '$~i', (string) $value)) {
48:             return false;
49:         }
50: 
51:         return true;
52:     }
53: }
54: