Redefine an already defined constant runkit_constant_add runkit_constant_remove runkit Functions PHP Manual runkit_constant_redefine (PECL runkit:0.7-0.9)runkit_constant_redefine — Redefine an already defined constant Description bool runkit_constant_redefine ( string $constname , mixed $newvalue ) Parameters constname Constant to redefine. Either string indicating global constant, or classname::constname indicating class constant. newvalue New value to assign to constant. Return Values Returns TRUE on success or FALSE on failure. See Also runkit_constant_add() runkit_constant_remove() runkit_constant_add runkit_constant_remove runkit Functions PHP Manual