7.4. Destroying an Object
$car = new car; // buy new car ... unset($car); // car wreck
It's not normally necessary to manually clean up objects, but if you have a large loop, unset( ) can help keep memory usage from spiraling out of control.
PHP 4 doesn't have destructors, however Zend Engine 2 supports them with the _ _destruct( ) method.
7.4.4. See Also
Documentation on unset( ) at http://www.php.net/unset.
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