How to make internal payments between users?

Question

Payment systems

It is necessary to make sure that each registered user has his own internal account. I will make a website specifically for this.
That is, each user can throw money to another. But it should be exclusively within the site.
Tell me, please, on what and with what help it can be done! On what engine, what plug-ins or what is there
?
At the same time, it is necessary that it be possible to set the conditions under which the user can "cash" his
account

Answer 1

It depends on what exactly you need, what programming knowledge you have
. database cell, then, if necessary, we subtract the required amount from the user's account, add it to another .. nothing complicated
But here, probably, freelansim will help more