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# PHP-CLI PHP-CLI is a simple library that helps with creating nice looking command line scripts. It takes care of - **option parsing** - **help page generation** - **automatic width adjustment** - **colored output** - **optional PSR3 compatibility** It is lightweight and has **no 3rd party dependencies**. [](https://travis-ci.org/splitbrain/php-cli) ## Installation Use composer: ```php composer.phar require splitbrain/php-cli``` ## Usage and Examples Minimal example: ```php #!/usr/bin/php <?php require __DIR__ . '/../vendor/autoload.php'; use splitbrain\phpcli\CLI; use splitbrain\phpcli\Options; class Minimal extends CLI { // register options and arguments protected function setup(Options $options) { $options->setHelp('A very minimal example that does nothing but print a version'); $options->registerOption('version', 'print version', 'v'); } // implement your code protected function main(Options $options) { if ($options->getOpt('version')) { $this->info('1.0.0'); } else { echo $options->help(); } } } // execute it $cli = new Minimal(); $cli->run(); ```  The basic usage is simple: - create a class and ``extend splitbrain\phpcli\CLI`` - implement the ```setup($options)``` method and register options, arguments, commands and set help texts - ``$options->setHelp()`` adds a general description - ``$options->registerOption()`` adds an option - ``$options->registerArgument()`` adds an argument - ``$options->registerCommand()`` adds a sub command - implement the ```main($options)``` method and do your business logic there - ``$options->getOpts`` lets you access set options - ``$options->getArgs()`` returns the remaining arguments after removing the options - ``$options->getCmd()`` returns the sub command the user used - instantiate your class and call ```run()``` on it More examples can be found in the examples directory. Please refer to the [API docs](https://splitbrain.github.io/php-cli/) for further info. ## Exceptions By default the CLI class registers an exception handler and will print the exception's message to the end user and exit the programm with a non-zero exit code. You can disable this behaviour and catch all exceptions yourself by passing false to the constructor. You can use the provided ``splitbrain\phpcli\Exception`` to signal any problems within your main code yourself. The exceptions's code will be used as the exit code then. Stacktraces will be printed on log level `debug`. ## Colored output Colored output is handled through the ``Colors`` class. It tries to detect if a color terminal is available and only then uses terminal colors. You can always suppress colored output by passing ``--no-colors`` to your scripts. Disabling colors will also disable the emoticon prefixes. Simple colored log messages can be printed by you using the convinence methods ``success()`` (green), ``info()`` (cyan), ``error()`` (red) or ``fatal()`` (red). The latter will also exit the programm with a non-zero exit code. For more complex coloring you can access the color class through ``$this->colors`` in your script. The ``wrap()`` method is probably what you want to use. The table formatter allows coloring full columns. To use that mechanism pass an array of colors as third parameter to its ``format()`` method. Please note that you can not pass colored texts in the second parameters (text length calculation and wrapping will fail, breaking your texts). ## Table Formatter The ``TableFormatter`` class allows you to align texts in multiple columns. It tries to figure out the available terminal width on its own. It can be overwritten by setting a ``COLUMNS`` environment variable. The formatter is used through the ``format()`` method which expects at least two arrays: The first defines the column widths, the second contains the texts to fill into the columns. Between each column a border is printed (a single space by default). See the ``example/table.php`` for sample usage. Columns width can be given in three forms: - fixed width in characters by providing an integer (eg. ``15``) - precentages by provifing an integer and a percent sign (eg. ``25%``) - a single fluid "rest" column marked with an asterisk (eg. ``*``) When mixing fixed and percentage widths, percentages refer to the remaining space after all fixed columns have been assigned. Space for borders is automatically calculated. It is recommended to always have some relative (percentage) or a fluid column to adjust for different terminal widths. The table formatter is used for the automatic help screen accessible when calling your script with ``-h`` or ``--help``. ## PSR-3 Logging The CLI class is a fully PSR-3 compatible logger (printing colored log data to STDOUT and STDERR). This is useful when you call backend code from your CLI that expects a Logger instance to produce any sensible status output while running. To use this ability simply inherit from `splitbrain\phpcli\PSR3CLI` instead of `splitbrain\phpcli\CLI`, then pass `$this` as the logger instance. Be sure you have the suggested `psr/log` composer package installed.  You can adjust the verbosity of your CLI tool using the `--loglevel` parameter. Supported loglevels are the PSR-3 loglevels and our own `success` level: * debug * info * notice * success * warning * error * critical * alert * emergency Convenience methods for all log levels are available. Placeholder interpolation as described in PSR-3 is available, too. Messages from `warning` level onwards are printed to `STDERR` all below are printed to `STDOUT`. The default log level of your script can be set by overwriting the `$logdefault` member. See `example/logging.php` for an example.