Use an argument parser in the command line tools instead of manualy parsing the input.

[MartijnBraam]

Instead of parsing $argc/$argv manually and validate the input implement an argument parser library.

Posibilities I found:

• https://github.com/docopt/docopt.php handles helpmessages and parses input based on a docstring, available in composer
• http://php.net/manual/en/function.getopt.php build-in php function. really basic parser. no validation or help at all
• https://github.com/ulrichsg/getopt-php Fully object orientated argparser. available in composer

getopt-php seems to be the nicest one to implement.

[clemens-tolboom]

getopt-php look active so go for it :)

[MartijnBraam]

implemented in 3f0b1a0c6399091c5f34c049d5cfd468716bc55b