Changes from branches/3.9/src/wp-includes/compat.php at r29384 to trunk/wp-includes/compat.php at r18404

File:

• trunk/wp-includes/compat.php (modified) (1 diff)

trunk/wp-includes/compat.php

@@ -95 +95 @@
     }
 }
-
-if ( ! function_exists( 'hash_equals' ) ) :
-/**
- * Compare two strings in constant time.
- *
- * This function was added in PHP 5.6.
- * It can leak the length of a string.
- *
- * @since 3.9.2
- *
- * @param string $a Expected string.
- * @param string $b Actual string.
- * @return bool Whether strings are equal.
- */
-function hash_equals( $a, $b ) {
-    $a_length = strlen( $a );
-    if ( $a_length !== strlen( $b ) ) {
-        return false;
-    }
-    $result = 0;
-
-    // Do not attempt to "optimize" this.
-    for ( $i = 0; $i < $a_length; $i++ ) {
-        $result |= ord( $a[ $i ] ) ^ ord( $b[ $i ] );
-    }
-
-    return $result === 0;
-}
-endif;