php-ubuntu-error-log-set

http://askubuntu.com/questions/14763/where-are-the-apache-and-php-log-files

Check this settings in PHP.INI:

    error_reporting = E_ALL | E_STRICT (as recommended for development in php.ini)
    error_log = /var/log/php_errors.log

    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.