I'm sure this is documented somewhere...

If you wish to launch and debug a PHP CLI script from within PhpEd with command line arguments (assuming that you've setup the project as a CLI), you can't add the arguments using the 'Run:Parameters' menu. But you can add them to the script's launch command in the Launch Box. Simply edit the launch properties for the script and add the space-delimited arguments to the GET parameter the same way you would specify them as arguments to the script on the command line. These will be correctly parsed into the argv[] array.

In the quck box launch entry, for the GET params enter your long arg format options
eg.
--database=MY_DB --assetpath=/tmp/my-assets --client=acme-widgets --bucket=acme-widgets-imgix --resizeservice=acme-widgets.imgix.net


$longopts = array(
'database:',
'assetpath:',
'clientid:',
'bucket:',
'resizeservice:',
'pathindb'
);

$options = getopt(null, $longopts);

$ options will be an enumerated array with the option names as the keys.