Php error messages

disabling user error and logging to a file

added to /etc/php/cgi-php5.4/php.ini

# supress php errors
php_flag display_startup_errors off
php_flag display_errors off
php_flag html_errors off
php_value docref_root 0
php_value docref_ext 0
# enable PHP error logging
php_flag  log_errors on
php_value error_log  /home/path/public_html/domain/PHP_errors.log
# prevent access to PHP error log
<Files PHP_errors.log>
 Order allow,deny
 Deny from all
 Satisfy All
</Files>

http://stackoverflow.com/questions/1645661/turn-off-warnings-and-errors-on-php-mysql