php 通过反射，修改 Exception 实例的 message 属性

$exception = new \Exception('haha');
$message = " - use reflection appended message";
$reflectionObject = new \ReflectionObject($exception);
$reflectionObjectProp = $reflectionObject->getProperty('message');
$reflectionObjectProp->setAccessible(true);
$reflectionObjectProp->setValue($exception, $exception->getMessage() . $message);

print_r($exception->getMessage());