Problems with PHP 7

I’ve been prompted to migrate my site to the new control panel. After I did it, I realized that many commands were not working (mysql_fetch_array, mysql_query, etc.) because it’s using PHP 7 and those commands are no longer supported. I don’t have the time to change all my code to adapt it to PHP 7, is there any possibility to user previous version of PHP (5.5 for example)?

Yes you can change the PHP version in the website panel, under settings and general. Scroll down and you’ll see the option to change the PHP version to 5.5 or something else.