Omnibus homepages with PHP should be updated
PHP sites on Omnibus are currently using the outdated PHP-5.5.14. A switch to PHP-7.2 is planned for the end of July 2018.
Please edit your PHP pages so that they are compatible with the versions 5.5 and 7.2.
See also:
http://php.net/supported-versions.php
http://php.net/manual/de/migration56.php
http://php.net/manual/de/migration70.php
http://php.net/manual/de/migration71.php
http://php.net/manual/de/migration72.php