unset()

por | 19 Abril, 2007
unset()
Syntax:
    void unset(mixed var [, mixed var, …])
var
    Variable to unset.
Unsets a variable.
unset() destroys one or more variables and deallocates the memory associated with them.
Code:

<?php

$a = "Some data";

unset($a);
if (!isset($a)) {
   print "\$a is no longer available";
}

?>

Output:

$a is no longer available