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GetOpt.php is a command-line argument processor for PHP 5.4 and above. It started out as an object-oriented replacement for PHP's own getopt() method, but has since evolved to become significantly more powerful.

Feature Overview

• Supports both short (e.g. -v) and long (e.g. --version) options
• Option aliasing, ie. an option can have both a long and a short version
• Cumulative short options (e.g. -vvv)
• Two alternative notations for long options with arguments: --option value and --option=value
• Collapsed short options (e.g. -abc instead of -a -b -c), also with an argument for the last option (e.g. -ab 1 instead of -a -b 1)
• Two alternative notations for short options with arguments: -o value and -ovalue
• Quoted arguments (e.g. --path "/some path/with spcaces") for string processing
• Options with multiple arguments (e.g. --domain example.org --domain example.com)
• Operand (positional arguments) specification, validation and limitation
• Command routing with specified options and operands
• Help text generation
• Default argument values
• Argument validation