Zurmo is one of open source CRM application based on PHP. Current application isn't supported for PHP 7 environment because some application scripts still implement unsupported (obsolete) PHP function such as mysql_connect , mysql_fetch_array , etc. First, we must change some scripts which still implement unsupported PHP 7 functions. The scripts are: app\protected\commands\tests\unit\DatabaseCommandTest.php app\protected\core\tests\unit\DatabaseCompatibilityUtilTest.php app\protected\core\utils\DatabaseCompatibilityUtil.php You can download the scripts from HERE . Second, if we run Nginx server, we can use this following configuration. server { listen 443 ssl; root /path/to/zurmo ; index index.php index.html; server_name yourdomain.com ; ssl_certificate /pat/to/yourdomain.crt ; ssl_certifi...