public static function getPathPHP() {
		
		$manualPHP = Config::getOption("phpBin");
		$autoPHP   = new PhpExecutableFinder();
		$path      = $manualPHP ? $manualPHP : $autoPHP->find();
		
		if (!$path) {
			$configPath = Console::getHumanReadablePath(Config::getOption("configPath"));
			$examplePHP = (DIRECTORY_SEPARATOR === "/") ? "C:\wamp\bin\php\php5.5.12" : "/opt/local/lib/php54";
			Console::writeError("can't find PHP. add the path to PHP by adding the option \"phpBin\" to <path>".$configPath."</path>. it should look like \"phpBin\": \"".$examplePHP."\"");
		}
		
		return $path;
		
	}