Enabling error logging
You can use the log_errors and error_log directives to configure PHP error logging. To do this, follow these steps:

Log in to your account using SSH.

Use a text editor to add the following lines to the .htaccess file. Replace path with the path to the log file, and replace filename with the log filename:

php_flag log_errors On

php_value error_log /path/filename

Save the changes to the .htaccess file and exit the text editor.

To verify that the new setting is active, create a PHP test file that contains the following code in the same directory where the .htaccess file is located:

<?php phpinfo(); ?>

Load the test file in your web browser, and then search for the name of the directive. The Local Value column should display the new setting that you specified in the .htaccess file.

Disabling error logging
To disable error logging, modify the log_errors line in the .htaccess file as follows:

php_flag log_errors Off