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Editorial Team
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Asked: 2026-06-17T06:23:45+00:00

I have three mysql tables; Users , Tasks and Task_Users , where each user

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I have three mysql tables; Users, Tasks and Task_Users, where each user can create their tasks through a web application I’m developing in PHP.

The thing is, I want my application to send an email to the users one day before the task occurs. The first thing that came to my mind was to do a MySQL job or trigger to send the email but I dont have an idea of how to do id,

What would be the best way make this happen or how could I call a job through PHP and execute it every day and verify that there is just one day left before the taks ocurrs and then if that is true send the email?

Here’s my table definition. Thanks in advance.

Users
----------
UserId,Names,email,pass

Tasks
------------
TaskId,TaskName,Descripcion,TaskDateTime

Tasks_Users
------------
TaskId,UserID
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1 Answer

  1. Editorial Team

    You can write a CRON Job for this.

    What’s CRON Job ?

    Cron is the name of program that enables unix users to execute commands or
    scripts (groups of commands) automatically at a specified time/date. It is
    normally used for sys admin commands, like makewhatis, which builds a
    search database for the man -k command, or for running a backup script,
    but can be used for anything. A common use for it today is connecting to
    the internet and downloading your email.

    What do you have to do ?

    Just write a normal PHP script. make one that will work if it’s launched directly from the browser. Then schedule that very same PHP file to run in cron, using this as a guide:

    How to run a CRON Job after it’s written ?

    http://www.inmotionhosting.com/support/edu/cpanel/301-run-cron-job

    If you have any issues let me know.

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