Why does it point to a non-existent string?

Question

PHP

Hello! Today I encountered such a problem ... PHP indicates the following errors:

Notice: Undefined offset: 1 in /var/www/html/*** on line 956
Notice: Undefined offset: 2 in /var/www/html/*** on line 957
Notice: Undefined index: in /var/www/html/*** on line 957
Notice: Undefined offset: 2 in /var/www/html/*** on line 957
Notice: Undefined index: in /var/www/html/*** on line 957

But, there are only 806 lines in the document.

Answer 1

Most likely the problem is that your editor and php consider a different sequence of characters for a line feed.
https://ru.wikipedia.org/wiki/%D0%9F%D0%B5%D1%80%D...