1: <?php
 2: 
 3: /*
 4:  * Copyright (c) 2016 Geraldo B. Landre
 5:  *
 6:  * See the file LICENSE for copying permission.
 7:  */
 8: 
 9: namespace utils;
10: 
11: /**
12:  * Description of String
13:  *
14:  * @author geraldo
15:  */
16: class String {
17:     // startsWith and endsWith from 
18:     // http://stackoverflow.com/questions/834303/startswith-and-endswith-functions-in-php
19: 
20:     /**
21:      * Search backwards starting from haystack length characters from the end
22:      * @assert("abcdef", "cd") == false
23:      * @assert("abcdef", "ef") == false
24:      * @assert("abcdef", "") == true
25:      * @assert("", "abcdef") == false
26:      * 
27:      * @link http://stackoverflow.com/questions/834303/startswith-and-endswith-functions-in-php font.
28:      * @param string $haystack
29:      * @param string $needle
30:      * @return bool
31:      */
32:     public static function startsWith($haystack, $needle) {
33:         return $needle === "" || strrpos($haystack, $needle, -strlen($haystack)) !== FALSE;
34:     }
35: 
36:     /**
37:      * Search forward starting from end minus needle length characters
38:      * 
39:      * @assert("abcdef", "ab") == false
40:      * @assert("abcdef", "cd") == false
41:      * @assert("abcdef", "ef") == true
42:      * @assert("abcdef", "") == true
43:      * @assert("", "abcdef") == false
44:      * 
45:      * @link http://stackoverflow.com/questions/834303/startswith-and-endswith-functions-in-php font.
46:      * @param string $haystack
47:      * @param string $needle
48:      * @return bool
49:      */
50:     public static function endsWith($haystack, $needle) {
51:         return $needle === "" || (($temp = strlen($haystack) - strlen($needle)) >= 0 && strpos($haystack, $needle, $temp) !== FALSE);
52:     }
53: 
54: }
55: