x
<html><body><pre>$colors = array("red", "green", "blue", "yellow");foreach ($colors as &$x) { if ($x == "blue") $x = "pink";}var_dump($colors);</pre></body></html>array(4) {
[0]=>
string(3) "red"
[1]=>
string(5) "green"
[2]=>
string(4) "pink"
[3]=>
string(6) "yellow"
}