Call to undefined function mysqli_ connect( ). Call to undefined function mysql_ connect( ). it but " php_ mysql. dll" is for Windows, not Linux. 53: 01 ] [ error] [ client 198. In case anyone else faces this, it' s a case of PHP not having access to the mysql client libraries. Having a MySQL server on the system is not the correct fix. Fix for ubuntu ( and PHP 5) : sudo apt- get install php5- mysql. 1) php7 распакован в папку c: \ apps\ php7. Не могу запустить следующий скрипт: