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uopz_undefine

(PECL uopz >= 1.0.0)
Undefine a constant
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

Returns:
Examples:
uopz_undefine() example
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<?php
define("MY", true);
 
uopz_undefine("MY");
 
var_dump(defined("MY"));
?>

The above example will output something similar to:

bool(false)
doc_php
doc_php
2025-01-10 15:47:30
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