$argc — The number of arguments passed to script
Contains the number of arguments passed to the current script when running from the command line.
Note: The script's filename is always passed as an argument to the script, therefore the minimum value of $argc is 1.
Example #1 $argc example
<?php var_dump($argc); ?>
When executing the example with: php script.php arg1 arg2 arg3
The above example will output something similar to:
This is also available as $_SERVER['argc'].