PHP Manual: Redefine a constant

bool uopz_redefine(string $constant, mixed $value)

bool uopz_redefine(string $class, string $constant, mixed $value)

Redefines the given constant as value

class: The name of the class containing the constant
constant: The name of the constant
value: The new value for the constant, must be a valid type for a constant variable

Returns true on success or false on failure.

Example #1 uopz_redefine example

<?php
define("MY", 100);

uopz_redefine("MY", 1000);

echo MY;
?>

The above example will output: