Where is the PHP error log

Question

I've installed apache, php, and mysql on Ubuntu 10.10 desktop edition, and it's working fine.
Except I have no clue where to look for apache or PHP log files.

Answer 1

By default, /var/log/apache2/error.log.

This can be configured in /etc/php5/apache2/php.ini.

Answer 2

You can also define a specific error log file for each VirtualHost in Apache. If you have any VirtualHost defined in /etc/apache2/sites-available/ and enabled in /etc/apache2/sites-enabled (enable with sudo a2ensite [your-virtualhost-definition-file]), you can change the error log by adding the following line inside your VirtualHost config:

ErrorLog ${APACHE_LOG_DIR}/[your-vhost]-error.log

That might be useful if you have a lot of vhosts and want to split where they report the errors.

Also, you can watch your error log live by issuing the following command (adapt to your own log file if different from the default):

sudo tail -f /var/log/apache2/error.log

This is particularly useful when doing live debugging.

Answer 3

Check this settings in PHP.INI: 1. error_reporting = E_ALL | E_STRICT (as recommended for development in php.ini) 2. error_log = /var/log/php_errors.log 3. Then create log file manually

touch /var/log/php_errors.log
chown www-data: /var/log/php_errors.log
chmod +rw /var/log/php_errors.log

Now you can view PHP errors by this way

tail /var/log/php_errors.log

This is a solution to this issue for me.