File vendor/joomla/string/src/phputf8/str_ireplace.php | Joomla! Framework TM

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 1 <?php
 2 /**
 3 * @package utf8
 4 */
 5 
 6 //---------------------------------------------------------------
 7 /**
 8 * UTF-8 aware alternative to str_ireplace
 9 * Case-insensitive version of str_replace
10 * Note: requires utf8_strtolower
11 * Note: it's not fast and gets slower if $search / $replace is array
12 * Notes: it's based on the assumption that the lower and uppercase
13 * versions of a UTF-8 character will have the same length in bytes
14 * which is currently true given the hash table to strtolower
15 * @param string
16 * @return string
17 * @see http://www.php.net/str_ireplace
18 * @see utf8_strtolower
19 * @package utf8
20 */
21 function utf8_ireplace($search, $replace, $str, $count = NULL){
22 
23     if ( !is_array($search) ) {
24 
25         $slen = strlen($search);
26         if ( $slen == 0 ) {
27             return $str;
28         }
29 
30         $lendif = strlen($replace) - strlen($search);
31         $search = utf8_strtolower($search);
32 
33         $search = preg_quote($search, '/');
34         $lstr = utf8_strtolower($str);
35         $i = 0;
36         $matched = 0;
37         while ( preg_match('/(.*)'.$search.'/Us',$lstr, $matches) ) {
38             if ( $i === $count ) {
39                 break;
40             }
41             $mlen = strlen($matches[0]);
42             $lstr = substr($lstr, $mlen);
43             $str = substr_replace($str, $replace, $matched+strlen($matches[1]), $slen);
44             $matched += $mlen + $lendif;
45             $i++;
46         }
47         return $str;
48 
49     } else {
50 
51         foreach ( array_keys($search) as $k ) {
52 
53             if ( is_array($replace) ) {
54 
55                 if ( array_key_exists($k,$replace) ) {
56 
57                     $str = utf8_ireplace($search[$k], $replace[$k], $str, $count);
58 
59                 } else {
60 
61                     $str = utf8_ireplace($search[$k], '', $str, $count);
62 
63                 }
64 
65             } else {
66 
67                 $str = utf8_ireplace($search[$k], $replace, $str, $count);
68 
69             }
70         }
71         return $str;
72 
73     }
74 
75 }
76 
77 
78