Fix open cart website asap

My host upgraded the php version on my web host and now the website does not work, i need this fixed asap, below is the error you get when you go to the website now.


Fatal error: Uncaught Error: Call to undefined function mysql_connect() in /home/customer/www/loprofilepc.com/public_html/store/system/database/mysql.php:6 Stack trace: #0 /home/customer/www/loprofilepc.com/public_html/store/system/library/db.php(12): MySQL->__construct('localhost', 'loprofil_lpcdb', 'om686giPdS', 'loprofil_lpcdb') #1 /home/customer/www/loprofilepc.com/public_html/store/index.php(42): DB->__construct('mysql', 'localhost', 'loprofil_lpcdb', 'om686giPdS', 'loprofil_lpcdb') #2 {main} thrown in /home/customer/www/loprofilepc.com/public_html/store/system/database/mysql.php on line 6