<?php
class OS {
function __construct($name) {
echo "Constructor called<br />";
}
function __destruct() {
echo "Destructor called<br />";
}
}
$linux = new OS('linux');
echo "Step 1<br />";
$ref = $linux;
echo "Step 2<br />";
$linux = NULL;
echo "Step 3<br />";
$ref = NULL;
echo "Step 4<br />";
?>