No it doesn’t, Velo works on Javascript / typescript; you would need to convert the code from php to Javascript; Mysql on Wix is essentially “collections” (database tables).
Alternatively you could, as a stretch, use wix as the front end and “fetch” the data from a server running your php code so long as it had an api of some kind built in.
You also can’t technically use/build with html on wix, unless you count custom components.
You have also included a filesystem link, only you can access this file from your system, you would need an online url to the instructions for us to see that read me file