uopz_undefine
(PECL uopz 1, PECL uopz 2, PECL uopz 5, PECL uopz 6, PECL uopz 7)
uopz_undefine — Undefine a constant
Description
$constant
): bool$class
, string $constant
): boolRemoves the constant at runtime
Parameters
-
class
-
The name of the class containing
constant
-
constant
-
The name of an existing constant
Return Values
Returns true
on success or false
on failure.
Examples
Example #1 uopz_undefine() example
<?php
define("MY", true);
uopz_undefine("MY");
var_dump(defined("MY"));
?>
The above example will output:
bool(false)