Why does `catch (Exception $e)` not handle this `ErrorException`?

问题

I get the ErrorException on the function call bellow. How can this be? Why is it not caught?

try {
    static::$function_name($url);
}
catch (Exception $e) {}

The underlying reason for the error is a file_put_contents call. I'm using the Laravel 4 framework, if it makes any difference.

回答1:

I suspect that you need to write this:

try {
    static::$function_name($url);
} catch (\Exception $e) {}

Note the \ in front of Exception.

When you have declared a namespace, you need to specify the root namespace in front of classes like Exception, otherwise the catch block here will be looking for \Your\Namespace\Exception, and not just \Exception

来源：https://stackoverflow.com/questions/15071191/why-does-catch-exception-e-not-handle-this-errorexception