runkit7_constant_remove
(PECL runkit7 >= Unknown)
runkit7_constant_remove — Remove/Delete an already defined constant
说明
runkit7_constant_remove
( string
$constname
) : bool参数
-
constname
-
Name of the constant to remove. Either the name of a global constant, or
classname::constname
indicating a class constant.
返回值
成功时返回 true
, 或者在失败时返回 false
。
参见
- define() - 定义一个常量
- runkit7_constant_add() - Similar to define(), but allows defining in class definitions as well
- runkit7_constant_redefine() - Redefine an already defined constant