Help me now understand how to use htacces on this hosting.
.htaccess is a file which configures how server should react on different situations per session. If it is configured incorrectly, 000webhost throws
Application Error / 500.
@ckhawand told you to append that code to
.htaccess in order to display the eventual PHP errors. It appears that you have inserted the code incorrectly, therefore you have received that error. The code supposed to be introduced in a new line. If the error was still occurring you should have used this code instead:
php_value display_errors 1
But now it does not matter anymore, as long as the problem has been solved