PHP error reporting works ONLY when line is added in code

Question

I have a problem with my PHP error_reporting. I have all the values for error_reporting and display_errors set in php.ini but my code still remains blank page until I add a line in php code :

error_reporting(E_ALL);

Only after adding this line in my code I can see errors, such as

Notice: Undefined index: id in C:\...\index.php on line 4

How do I change php.ini (or something else, perhaps?) to get the errors without adding this line?

Answer 1

1. using phpinfo() verify the actual php.ini location
2. restart web-server