Case insensitive LIKE with PHQL

Hi

I'm porting my company's to Phalcon, We use MySQL, and when filtering data, use a query like this:

SELECT * from users where LOWER(name) LIKE LOWER(:name);

In the docs, I've seen that PHQL supports functions (TRIM, even custom ones) but I haven't been able to find a list of supported functions or how could one implement a custom one.

Any help would be appreciated.

Thanks