How to store svg?

Question

PHP

Hello!
When registering, the user does not yet upload a profile photo, a photo is temporarily placed on which the capital letter of the name (svg) is placed.
Question for experienced developers...
How would you implement this system?
Store in some class, inside the array, the svg code itself, somewhere in the directory ...
How to correctly implement this?
Thank you!

Answer 1

First of all, I would not do it on svg (why?), perhaps this option will do: https://codepen.io/anon/pen/WzEzRK