This is more a note for me, to remember this when my memory steps away!

In PHP, I have:

Code snippet:

session_start();

ini_set(‘display_errors’,1);
ini_set(‘display_startup_errors’,1);
error_reporting(-1);

Throws a 500 error, when I tried to access the page.

You have to add this line in .htaccess:

php_flag display_errors 1

And then restart the server with:  service apache2 restart

Referens: http://stackoverflow.com/questions/17693391/500-internal-server-error-for-php-file-not-for-html