Note that if you are mangling $argv separate from getopt(), that getopt() expects $argv to start with the command name in $argv[0]. So if you've shifted $argv, getopt() will start parsing at the second token, which means it will either miss the first option, or start parsing on the first option's value, breaking parsing.
$cmd = array_shift($argv);
$key_id=array_shift($argv);
array_unshift($argv,"");
$opts = getopt("a:b:c:");
getopt() skips over $argv[0] to start its parsing at $argv[1]. It doesn't really matter what is in $argv[0].
