.htaccess - Enabling error display in PHP via htaccess only

Question

I am testing a website online.

Right now, the errors are not being displayed (but I know they exist).

I have access to only the .htaccess file.

How do I make all errors to display using my .htaccess file?

---

I added these lines to my .htaccess file:

php_flag display_startup_errors on
php_flag display_errors on
php_flag html_errors on

And the pages now display:

Internal server error

Answer 1

.htaccess:

php_flag display_startup_errors on
php_flag display_errors on
php_flag html_errors on
php_flag  log_errors on
php_value error_log  /home/path/public_html/domain/PHP_errors.log