How to check whether an array is empty using PHP?

`players ` will either be empty or a comma separated list (or a single value). What is the easiest way to check if it's empty? I'm assuming I can do so as soon as I fetch the `$gameresult` array into `$gamerow`? In this case it would probably be more efficient to skip exploding the `$playerlist` if it's empty, but for the sake of argument, how would I check if an array is empty as well? $gamerow = mysql_fetch_array($gameresult); $playerlist = explode(",", $gamerow['players']);