Undefine a constant

uopz_restore
Weakref
Uopz Functions
PHP Manual

# uopz_undefine

(PECL uopz >= 1.0.0)

uopz_undefine — Undefine a constant

### Description

void uopz_undefine ( string `$class` , string `$constant` )
void uopz_undefine ( string `$constant` )

Removes the constant at runtime

### Parameters

`class`

  The name of the class containing `constant`

`constant`

  The name of an existing constant

### Return Values

### Examples

Example #1 uopz_undefine() example

`<?php
define("MY", true);
uopz_undefine("MY");
var_dump(defined("MY"));
?>`

The above example will output something similar to:

    bool(false)

uopz_restore
Weakref
Uopz Functions
PHP Manual