When accessing the user, staff, and admin pages on Kayako Classic, you might receive "Deprecated Function" errors from PHP.
Example: Deprecated: Function mcrypt_get_iv_size() is deprecated in...
As a constantly developing language, newer PHP versions include functions that become deprecated. These functions cease to exist or change the expected result of the function as further versions of PHP are released. These changes can result in warnings and error messages when you update your version of PHP and run existing code. Using these deprecated functions results in the creation of warnings or errors, as described above.
If you received errors regarding function deprecation, you have two options:
Suppress the warnings by adding the following line to the
error_reporting = E_ALL & ~E_NOTICE & ~E_DEPRECATEDFor more information about how to edit the php.ini file, you can refer to the hostinger.com article How to Edit the PHP.ini File
Upgrade your PHP to a higher version. For information about PHP releases, please visit the Unsupported Historical Releases website. Also, please check out Kayako Classic Server Configuration and System Requirements to learn what version of PHP is supported