Cab file: Example code to show how to write CLI Scripts

cab

#!/usr/bin/env php
<?php

/**
 * Message displayed to the console if the user supplies no command
 * @return void
 */
function helpMessage()
{
    echo "
            ______           ___            _______      __   _____  _____
          / ____/___  ____ _/_/    ___    / _______/   /   \ / ___/ /____/
         / /   / __ \/ __ \/ /    / /    /  ______   /  /_\ / /  / /____
        / /___/ /_/ / /_/ / /____/ /    / /_____/  /  ____ / /__/ /___/
        \____/\____/\____/\______/     /_/       /__/   \_/\___/\____/

        Usage:
         command [options] [arguments]

        Options:
         --drive              Drive the cab
         install              Install all the tools needed to drive the cab
        ";
}

/**
 *  Checks if the arguments are valid and exist
 * @param  $arg
 * @return void
 */
function validateArgs($arg)
{
    if ( count($arg) == 1){
        helpMessage();
        return;
    }

    grabCommands($arg[1]);
}

/**
 * Gets commands passed as arguments to the command line
 * @param  string $command
 * @return void
 */
function grabCommands($command)
{
    if( $command === 'install') {
        echo "
        ......Installing
        ......gearbox,
        ......car handle,
        ......motor engine and spareparts
        Done. Installed Successfully";
    }

    if( $command === '--drive') {
        echo "....The car is in motion now. Please Drive Carefully";
    }
}

validateArgs($argv);