IF statement help

Hi: I have a script with an IF statement that has to check for several control commands in a single comparison (see below). If any one of the control commands are present, I will call a function. If none of the commands are present, I will call a different function. My question is: Is there a way to accomplish the same thing without having this large of an IF statement comparison? if (($key=="control1") || ($key=="control2") || ($key=="control3") || ($key=="control4") || ($key=="control5") || ($key=="control6") || ($key=="control7") || ($key=="control8") || ($key=="control9")) { // do something; } else { // do somthing else; } Thanks, Chesley