MySQL:在事件上触发PHP

I'm wondering if it's possible to do the following without using a cronjob/scheduled task that runs every x minute.

I have an event in the database that runs every 5 minutes and calls a procedure that checks a datetime column in a table to see if the datetime is greater then 30 days old and this is all working grand, what I want to happen here is when a date is greater then 30 days old that is kicks off an email to the relevant email address notifying them that the entry is 30 days old.

The slight catch to this is that as the website is already 95% built it has a built in notification class that handles all emails and has multi-lingual support based on the user being sent the email.

I know I can write a small PHP file to do all this and use a cronjob or windows scheduler to run it but I'm trying to stay away from relying on these features.

With all this is mind is there a way to tell MySQL to call/run a PHP file once the procedure finds a match after being run by the event in the event scheduler?