Mega Code Archive
Array_key_exists
<![CDATA[
<?php
$state["Delaware"] = "December 7, 1787";
$state["Pennsylvania"] = "December 12, 1787";
$state["Ohio"] = "March 1, 1803";
if (array_key_exists("Ohio", $state)) echo "Ohio joined the Union on $state[Ohio]";
?>
]]>