piro@shiori ~ $ echo '<?php var_dump($argc); var_dump($argv); ?>' > arg.php
piro@shiori ~ $ php arg.php --key blah
int(3)
array(3) {
  [0]=>
  string(7) "arg.php"
  [1]=>
  string(5) "--key"
  [2]=>
  string(4) "blah"
}