From 7d8be2006640e723bf77e0c1a74adf2e672e5246 Mon Sep 17 00:00:00 2001
From: andi <andi@splitbrain.org>
Date: Fri, 20 May 2005 22:34:48 +0200
Subject: fixed problem with utf8_substr and feed generation #340

darcs-hash:20050520203448-9977f-4381d98899e730a301c655b5aae59e83b5580a88.gz
---
 inc/utf8.php | 27 +++++++++++----------------
 1 file changed, 11 insertions(+), 16 deletions(-)

(limited to 'inc')

diff --git a/inc/utf8.php b/inc/utf8.php
index 3e3edd67f..0b90c8586 100644
--- a/inc/utf8.php
+++ b/inc/utf8.php
@@ -111,24 +111,19 @@ function utf8_strlen($string){
 /**
  * Unicode aware replacement for substr()
  *
- * @todo   Handle negative positions etc.
- * @author Harry Fuecks <hfuecks@gmail.com>
+ * @author lmak at NOSPAM dot iti dot gr
+ * @link   http://www.php.net/manual/en/function.substr.php
  * @see    substr()
  */
-function utf8_substr($str, $start, $length=null){
-  if ( is_null($length) ) {
-    $length = '*';
-  } else { 
-    $length = '{0,'.$length.'}';
-  }
-  $pattern = '/^.{'.$start.'}(.'.$length.')/us';
-  preg_match($pattern, $str, $matches);
-
-  if ( isset($matches[1]) ) {
-    return $matches[1];
-  }
-  return false;
-}
+function utf8_substr($str,$start,$length=null){
+   preg_match_all("/./u", $str, $ar);
+
+   if($length != null) {
+       return join("",array_slice($ar[0],$start,$length));
+   } else {
+       return join("",array_slice($ar[0],$start));
+   }
+} 
 
 /**
  * Unicode aware replacement for explode
-- 
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