runkit7_constant_redefine

(PECL runkit7 >= Unknown)

runkit7_constant_redefine — Redefine an already defined constant

说明

runkit7_constant_redefine(string $constname, mixed $value, int $newVisibility = ?): bool

参数

constname

Constant to redefine. Either the name of a global constant, or classname::constname indicating class constant.

value

Value to assign to the constant.

newVisibility

The new visibility of the constant, for class constants. Unchanged by default. One of the RUNKIT7_ACC_* constants.

返回值

成功时返回 true， 或者在失败时返回 false。

参见