A PHP platform to post messages on specific date [closed]

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I am planning to write my first PHP server side code. It includes a scheduler that will email a message to a user on a specific date. The front end of the application is fairly simple.

PHP produces an HTML page where you can select a date in the future to post the message to a an email address.

The question is how would you create an event manager in PHP to handle this? What database would you use? MYSQL or PostgreSQL and why!?

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It makes no difference MySQL and PostgreSQL can both handle this fine, they are called databases for a reason.

MySQL is more common as a LAMP stack and you will probably find a lot more information on using PHP with MySQL so I'd stick with that.

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To run schedule tasks on server use cron. With cron you can run php file that will read data from database and send email.

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In regards with the scheduling, you can utilize a cron job if you are using Linux. Windows has a similar service as well.