Ticket #18007: 18007.2.patch

wp-includes/functions.php

@@ -251 +251 @@
         $data = trim( $data );
         if ( 'N;' == $data )
                 return true;
-        $length = strlen( $data );
-        if ( $length < 4 )
+        if ( strlen( $data ) < 4 )
                 return false;
         if ( ':' !== $data[1] )
                 return false;
-        $lastc = $data[$length-1];
+        $lastc = substr( $data, -1 );
         if ( ';' !== $lastc && '}' !== $lastc )
                 return false;
         $token = $data[0];
         switch ( $token ) {
                 case 's' :
-                        if ( '"' !== $data[$length-2] )
+                        if ( '"' !== substr( $data, -2, 1 ) )
                                 return false;
                 case 'a' :
                 case 'O' :
@@ -288 +287 @@
         if ( !is_string( $data ) )
                 return false;
         $data = trim( $data );
-        $length = strlen( $data );
-        if ( $length < 4 )
+        if ( strlen( $data ) < 4 )
                 return false;
         elseif ( ':' !== $data[1] )
                 return false;
-        elseif ( ';' !== $data[$length-1] )
+        elseif ( ';' !== substr( $data, -1 ) )
                 return false;
         elseif ( $data[0] !== 's' )
                 return false;
-        elseif ( '"' !== $data[$length-2] )
+        elseif ( '"' !== substr( $data, -2, 1 ) )
                 return false;
         else
                 return true;