This article provides information about the fatal error while calling function
mysql_connect() received when trying to install Kayako.
If you get an error like Fatal error: Call to undefined function mysql_connect() when trying to install Kayako, it probably means that MySQL support has not been enabled for PHP on your server (i.e. the PHP module
php-mysql has not been installed).
You can confirm whether or not the MySQL module is present by accessing a
phpinfo() page for the server. The MySQL module (if installed) will appear in the