Invoking a PHP script from a MySQL trigger

Is there any way how to invoke a PHP page / function when a record is inserted to a MySQL database table? We don’t have control over the record insertion procedure. Is there a trigger mechanism which can call a PHP script back?

Answer

The trigger is executed on the MySQL server, not on the PHP one (even if those are both on the same machine).

So, I would say this is not quite possible — at least not simply.

Still, considering this entry from the MySQL FAQ on Triggers :

23.5.11: Can triggers call an external application through a UDF?

Yes. For example, a trigger could invoke the sys_exec() UDF available here: https://github.com/mysqludf/lib_mysqludf_sys#readme

So, there might be a way via an UDF function that would launch the php executable/script. Not that easy, but seems possible. 😉