Are there limitations in mysqli that make it unsuitable for use with AMP or ReactPHP?

Question

I've seen that libraries such as amphp/mysql and friends-of-reactphp/mysql implement the low-level MySQL protocol, and do not rely on any built-in extension.

Given that mysqli supports async queries , is there any reason why these async libraries cannot be based on mysqli ?

_{Originally asked as Why isn't amphp/mysql based on mysqli? (closed).}

Answer 1

Hey ReactPHP core team member here. In short you shouldn't use them (you always can but we strongly advise against it) because their I/O isn't hooked into our event loop. Meaning it can block the entire loop and everything hooked into it until it's done with what ever it does.

Answer 2

Courtesy @bwoebi on amphp/mysql 's GitHub :

mysqli_poll() is just polling... mysql . It does not provide you any possibility to poll any other streams together with the mysql data. There's no underlying file descriptors exposed by mysqli which the event loop could use.