Php/docs/function.runkit7-constant-add
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runkit7_constant_add
(PECL runkit7 >= Unknown)
runkit7_constant_add — Similar to define(), but allows defining in class definitions as well
说明
runkit7_constant_add
( string $constname
, mixed $value
[, int $newVisibility
] ) : bool
参数
constname
- Name of constant to declare. Either a string to indicate a global constant, or
classname::constname
to indicate a class constant. value
- NULL, Bool, Long, Double, String, Array, or Resource value to store in the new constant.
newVisibility
- Visibility of the constant, for class constants. Public 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
- define() - 定义一个常量
- runkit7_constant_redefine() - Redefine an already defined constant
- runkit7_constant_remove() - Remove/Delete an already defined constant