Fix: EncodePunycodeIDN for php version older 5.4.8

idna.php

@@ -72,7 +72,7 @@ function EncodePunycodeIDN( $value )
     while ( mb_strlen( $str , 'UTF-8' ) > 0 )
       {
         array_push( $input, mb_substr( $str, 0, 1, 'UTF-8' ) );
-        $str = mb_substr( $str, 1, null, 'UTF-8' );
+        $str = (version_compare(PHP_VERSION, '5.4.8','<'))?mb_substr( $str, 1, mb_strlen($str, 'UTF-8') , 'UTF-8' ):mb_substr( $str, 1, null, 'UTF-8' );
       }
 
     /* basic symbols */