PHP » Miscellaneous » 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.
Examples
Code:
<?php
$a = "Some data";
unset($a);
if (!isset($a)) {
print "\$a is no longer available";
}
?>Output:
$a is no longer available Explanation:
unset() is used to remove the variable $a that had just been set.
See Also:
