If you are a student, and have PHP skills, and would like to participate to GSoC, here is a project idea: https://moodle.org/mod/forum/discuss.php?d=347843#p1463017
However I am not a Moodle mentor, so you will have to discuss it with Moodle mentors and find someone that is willing to support this project. For more details see this:
https://docs.moodle.org/dev/Applying_to_work_with_Moodle_for_GSOC
This year I have proposed to mentor these projects:
- https://wiki.debian.org/SummerOfCode2018/Projects/EasyGnuPG
- https://wiki.debian.org/SummerOfCode2018/Projects/FreedomBoxContainer
- https://wiki.debian.org/SummerOfCode2018/Projects/VirtualLtspServer
But there are already lots of good applicants (mostly from India).