The debugging feature of Xdebug can be easily turned on with the xdebug.remote_enable=1 option. With modern PHP, there is usually a special xdebug.ini configuration file; otherwise, we would edit the default php.ini file. With our Ubuntu installation, we add this to the /etc/php/7.0/apache2/conf.d/20-xdebug.ini file as follows:
zend_extension=xdebug.soxdebug.remote_enable=1
Once the file has been modified, we need to make sure the Apache server is restarted:
service apache2 restart
While xdebug.remote_enable is the required option to turn on the debugging feature, other related options include the following:
- xdebug.extended_info
- xdebug.idekey
- xdebug.remote_addr_header
- xdebug.remote_autostart
- xdebug.remote_connect_back
- xdebug.remote_cookie_expire_time ...
