# display no errs to user
php_flag display_startup_errors off
php_flag display_errors off
php_flag html_errors off
# log to file
php_flag log_errors on
php_value error_log /location/to/php_error.log

http://www.apphp.com/index.php?snippet=htaccess-error-logging

This example shows you how to log errors to a file, and prevent showing them to the user. Make sure that the file exists and you're able to write to it.

Error Logging in .htaccess

error, htaccess, log

Bash