runkit 函数
PHP Manual

runkit_constant_redefine

(PECL runkit >= 0.7.0)

runkit_constant_redefine Redefine an already defined constant

说明

bool runkit_constant_redefine ( string $constname , mixed $newvalue )

参数

constname

Constant to redefine. Either string indicating global constant, or classname::constname indicating class constant.

newvalue

New value to assign to constant.

返回值

成功时返回 TRUE, 或者在失败时返回 FALSE.

参见


runkit 函数
PHP Manual