<!DOCTYPE html>
<html>
<body>
<pre>
<?php
$cars = array("Volvo", "BMW", "Toyota");
foreach ($cars as &$x) {
$x = "Ford";
}
unset($x);
var_dump($cars);
?>
</pre>
</body>
</html>
array(3) { [0]=> string(4) "Ford" [1]=> string(4) "Ford" [2]=> string(4) "Ford" }