1 files changed, 72 insertions, 0 deletions
diff --git a/include/utf8/str_ireplace.php b/include/utf8/str_ireplace.php
new file mode 100644
index 0000000..7257b0a
--- /dev/null
+++ b/include/utf8/str_ireplace.php
@@ -0,0 +1,72 @@
+<?php
+
+/**
+* @version $Id: str_ireplace.php,v 1.2 2007/08/12 01:20:46 harryf Exp $
+* @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;
+	}
+}