How can I access these in-built PHP functions in SC

Calling imagettfbbox(), I get

 Fatal error: Uncaught Exception: Function "imagettfbbox" does not exist: ...

Similar error with calling jddayofweek().

Does anyone have experience using these in a blank form?

https://www.php.net/manual/en/function.imagettfbbox.php

Note: This function is only available if PHP is compiled with freetype support (–with-freetype-dir=DIR)

Yes, thank you, I came across this and sent this request as I simultaneously searched how to get that done. Been through so many stackoverflow articles but haven’t gotten enough detail.

Do you have any ready pointers as to how to achieve this in the Scriptcase context?

Specifically, PHP manual says:

"To enable support for FreeType 2 add --with-freetype-dir=DIR"

where exactly is that to be done?

You should install SC manually by configuring the PHP / Apache environments as you actually need enabling and disablig modules by enabling and disabling the necessary or unwanted modules.

Just for info
How to configure php with FreeType