A perfect way to convert php array into json file, works well with composer.json, and you could apply a well commented array

gistfile1.txt

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

$props = [
    'name'     => 'phalconslayer/slayer',
    'keywords' => [
        'skeleton', 'boilerplate', 'framework', 'phalcon', 'slayer',
        'bootstrap',
    ],
    'description' => 'Bootstrapped Phalcon Framework',
    'license'     => 'MIT',

    'require' => [
        'php'                     => '>=5.5.9',
        'phalconslayer/framework' => '1.0.*',
    ],

    'require-dev' => [
        'phpunit/phpunit'  => '^4.7',
        'mockery/mockery'  => '^0.9.4',
        'fzaninotto/faker' => '~1.4',
    ],


    # ----------------------------------------------------------------
    # Autoload Classes
    # ----------------------------------------------------------------
    # - the code below will be generating an array record of all
    # classes listed

    'autoload' => [

        # - classmaps are loaded on an array, and it is much more faster
        # than psr-4, however classmap's should only be applied
        # for command-based generated class files
        #
        # - or else, you should always run "composer dumpautoload"
        # to refresh the map

        'classmap' => [
            'app/',
            'sandbox/',
        ],


        # - psr-4 has a different way of process when composer autoloader analyze
        # the location of the class, it will base on the class 'use' by reverse
        # engineering the 'use' class to get the full php file path
        #
        # - this is why psr-4 is much more slower than classmap, however
        # if you're focusing on a development part, you should apply psr-4
        # instead of classmap.
        #
        # - and always run "composer dumpautoload --optimize" to convert
        # psr-4 to classmap in the vendor/composer/autoload_classmap.php

        'psr-4' => [
            'Components\\' => 'components/',
        ]
    ],
    'scripts' => [
        'post-install-cmd' => [
            'php brood optimize',
        ],
        'post-update-cmd' => [
            'php brood optimize',
        ],
        'post-root-package-install' => [
            "php -r \"copy('.env.example', '.env');\""
        ],
    ],
    'config' => [
        'preferred-install' => 'dist',
    ],
];





file_put_contents(
    dirname(__DIR__) . '/composer.json',
    str_replace(
        '\/',
        '/',
        json_encode($props, JSON_PRETTY_PRINT)."\n"
    )
);

print "Running (composer validate):\n";
$output = shell_exec('composer validate');
print $output;
exit();