禁用'echo'“exit（）;' 用PHP？

I have a PHP code base, where I see quite often the following code:

echo "" exit();

Looks like some debugging output/break, but it's spread over the code, so I assume it cannot be added/removed manually all the time. Is this a well known PHP technique or pattern? Is there some setting in php.ini where I somehow can switch the behavior of this line? How do I prevent the code from stopping all the time at this line?

Afraid not. The only way to stop that executing is to either wrap it in a setting conditional

define('DEBUGGING',1);

if(DEBUGGING == 1) echo "" exit;

Or do a find and replace to strip them out.

The Problem here is that echo "" exit(); will not output anything "" is an empty string and exit(); is also an output function but it also stops the script execution.

So if you do not need them why not simply delete 'em all?