Generate a Laravel .env for a Cloud9 configuration with MakeEnv.php
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	dereckson
	Jun 26 2016, 22:55

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Generate a Laravel .env for a Cloud9 configuration with MakeEnv.php
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	<?php

	/**
	* Generate an .env file from an .env.example file
	* in a Cloud9 environment, for Laravel framework.
	*/

	class EnvironmentFile {
	///
	/// Default values
	///

	const DEFAULT_SOURCE = '.env.example';
	const DEFAULT_TARGET = '.env';

	///
	/// Properties
	///

	public $source;
	public $target;
	private $config;

	///
	/// Constructors
	///

	static public function load () {
	return new static(static::DEFAULT_SOURCE, static::DEFAULT_TARGET);
	}

	public function __construct ($source, $target) {
	$this->source = $source;
	$this->target = $target;
	}

	public function readDefaultConfiguration () {
	$lines = file($this->source);
	foreach ($lines as $line) {
	$line = trim($line);
	if ($line === "" \|\| $line[0] == '#') {
	//Blank lines and comments are ignored
	continue;
	}

	$var = explode('=', $line, 2);
	$this->config[$var[0]] = $var[1];
	}
	return $this;
	}

	private function getConfigurationLine ($key, $value) {
	return $key . '=' . $value;
	}

	public function getConfiguration () {
	$lines = [];
	foreach ($this->config as $key => $value) {
	$value = $this->amendVariable($key, $value);
	$lines[] = $this->getConfigurationLine($key, $value);
	}
	return implode("\n", $lines);
	}

	public function save () {
	$configToWrite = $this->getConfiguration();
	file_put_contents($this->target, $configToWrite);
	}

	public static function getRandomString ($len = 32) {
	$bytes = openssl_random_pseudo_bytes(++$len / 2);
	return substr(bin2hex($bytes), 0, $len);
	}

	public function amendVariable ($key, $value) {
	switch ($key) {
	case APP_KEY:
	if ($value == "SomeRandomString") {
	return static::getRandomString();
	}
	break;

	case DB_HOST:
	return getenv("IP");

	case DB_DATABASE:
	return 'c9';

	case DB_USERNAME:
	return getenv("C9_USER");

	case DB_PASSWORD:
	return '';
	}

	return $value;
	}
	}


	if (!file_exists('.env.example')) {
	die("First, create an .env.example file with the default settings.\n");
	}

	echo EnvironmentFile::load()
	->readDefaultConfiguration()
	->getConfiguration();

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