Php/docs/function.uopz-undefine
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uopz_undefine
(PECL uopz 1, PECL uopz 2, PECL uopz 5, PECL uopz 6)
uopz_undefine — Undefine a constant
Description
uopz_undefine
( string $constant
) : bool
uopz_undefine
( string $class
, string $constant
) : bool
Removes 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
<?phpdefine("MY", true);uopz_undefine("MY");var_dump(defined("MY"));?>
The above example will output:
bool(false)
