unset() Function
<html> <head> <title>Unset()</title> </head> <body> <?php $authorJ = "A"; $authorC = "B"; $jeremy = &$authorJ; $charlie = &$authorC; print("$authorJ <br/>"); unset($jeremy); print($authorJ . " or " . $jeremy . "<br />"); print("$authorC <br />"); unset($charlie); unset($authorC); print($authorC); ?> </body> </html>