first commit

libraries/phputf8/str_ireplace.php

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+<?php
+/**
+* @version $Id$
+* @package utf8
+* @subpackage strings
+*/
+
+//---------------------------------------------------------------
+/**
+* UTF-8 aware alternative to str_ireplace
+* Case-insensitive version of str_replace
+* Note: requires utf8_strtolower
+* Note: it's not fast and gets slower if $search / $replace is array
+* Notes: it's based on the assumption that the lower and uppercase
+* versions of a UTF-8 character will have the same length in bytes
+* which is currently true given the hash table to strtolower
+* @param string
+* @return string
+* @see http://www.php.net/str_ireplace
+* @see utf8_strtolower
+* @package utf8
+* @subpackage strings
+*/
+function utf8_ireplace($search, $replace, $str, $count = NULL){
+
+    if ( !is_array($search) ) {
+
+        $slen = strlen($search);
+        if ( $slen == 0 ) {
+            return $str;
+        }
+
+        $lendif = strlen($replace) - strlen($search);
+        $search = utf8_strtolower($search);
+
+        $search = preg_quote($search, '/');
+        $lstr = utf8_strtolower($str);
+        $i = 0;
+        $matched = 0;
+        while ( preg_match('/(.*)'.$search.'/Us',$lstr, $matches) ) {
+            if ( $i === $count ) {
+                break;
+            }
+            $mlen = strlen($matches[0]);
+            $lstr = substr($lstr, $mlen);
+            $str = substr_replace($str, $replace, $matched+strlen($matches[1]), $slen);
+            $matched += $mlen + $lendif;
+            $i++;
+        }
+        return $str;
+
+    } else {
+
+        foreach ( array_keys($search) as $k ) {
+
+            if ( is_array($replace) ) {
+
+                if ( array_key_exists($k,$replace) ) {
+
+                    $str = utf8_ireplace($search[$k], $replace[$k], $str, $count);
+
+                } else {
+
+                    $str = utf8_ireplace($search[$k], '', $str, $count);
+
+                }
+
+            } else {
+
+                $str = utf8_ireplace($search[$k], $replace, $str, $count);
+
+            }
+        }
+        return $str;
+
+    }
+
+}
+
+