Allow environment to be checked via App::environment method.

src/Illuminate/Foundation/Application.php

@@ -196,13 +196,21 @@ public function startExceptionHandling()
 	}
 
 	/**
-	 * Get the current application environment.
+	 * Get or check the current application environment.
 	 *
+	 * @param  dynamic
 	 * @return string
 	 */
 	public function environment()
 	{
-		return $this['env'];
+		if (count(func_get_args()) > 0)
+		{
+			return in_array($this['env'], func_get_args());
+		}
+		else
+		{
+			return $this['env'];
+		}
 	}
 
 	/**

src/Illuminate/Foundation/changes.json

@@ -59,6 +59,7 @@
 		{"message": "Allow Blade processing on echos to be escaped using the @ sign.", "backport": null},
 		{"message": "Allow custom messages to be registered when using Validator::extend.", "backport": null},
 		{"message": "Added new auth:clear-reminders command for clearing expired password reminders.", "backport": null},
-		{"message": "Added Cookie::queue method for creating cookies that are automatically attached to the final response.", "backport": null}
+		{"message": "Added Cookie::queue method for creating cookies that are automatically attached to the final response.", "backport": null},
+		{"message": "Allow environment to be checked via App::environment method.", "backport": null}
 	]
 }