if (file = = ") What this code is intended for, and when the file will be empty

There is such a code in the init.php file in Ecshop

if (__file__ = = ")//This line does not want to understand, is it necessary to write, the absolute path of the current file under what circumstances will be empty??
{
Die (' Fatal error code:0 ');
}

Reply to discussion (solution)

__FILE__ indicates the filename of the current file
Impossible to Empty

It should have been his intention to write that, but he didn't want to know why he wrote it.

__FILE__ indicates the filename of the current file
Impossible to Empty

Ecshop should not write such a sentence for no reason, I think there should be any necessity

The file name may also be empty

If you have to say what the situation is empty you change its value to empty, then it will not be empty, unless you can not change

If you have to say what the situation is empty you change its value to empty, then it will not be empty, unless you can not change

Magic constants should not be assigned to the value of it, you said the file name to change the empty bar

The file name may also be empty

It could be a path.

The file name may also be empty

It is also possible to judge whether __file__ exists, that is, compatibility judgments, but it does not feel like this is necessary, __file__ early PHP version has

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