PHP 8.1.0 RC 4 available for testing

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

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