Merge pull request #9 from MittagQI/hotfix/slow-bodychunk-decode-for-…

…large-text

restore mbstring overloading for full backwards compatibility

library/Zend/Http/Response.php

@@ -591,9 +591,16 @@ public static function extractBody($response_str)
     public static function decodeChunkedBody($body)
     {
         $decBody = '';
-
         $offset = 0;
 
+        // If mbstring overloads substr and strlen functions, we have to
+        // override it's internal encoding
+        if (function_exists('mb_internal_encoding') &&
+           ((int) ini_get('mbstring.func_overload')) & 2) {
+            $mbIntEnc = mb_internal_encoding();
+            mb_internal_encoding('ASCII');
+        }
+
         while (true) {
             if (! preg_match("/^([\da-fA-F]+)[^\r\n]*\r\n/sm", $body, $m, 0, $offset)) {
                 if (trim(substr($body, $offset))) {
@@ -610,6 +617,10 @@ public static function decodeChunkedBody($body)
             $offset += $cut + $length + 2;
         }
 
+        if (isset($mbIntEnc)) {
+            mb_internal_encoding($mbIntEnc);
+        }
+
         return $decBody;
     }