Php/docs/function.runkit7-constant-remove

• PHP Manual
• runkit7 函数
• Remove/Delete an already defined constant

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