fixing some issues related to environment.

laravel/request.php

@@ -197,6 +197,17 @@ class Request {
 		return static::foundation()->server->get('LARAVEL_ENV');
 	}
 
+	/**
+	 * Set the Laravel environment for the current request.
+	 *
+	 * @param  string  $env
+	 * @return void
+	 */
+	public static function set_env($env)
+	{
+		static::foundation()->server->set('LARAVEL_ENV', $env);
+	}
+
 	/**
 	 * Determine the current request environment.
 	 *