The server executes the auto-execute program

What's the technology that allows the server to call a program every time

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What's the technology that allows the server to call a program every time

Depends on what program you have, what server.
Linux Server minute-level scheduled tasks with crontab, second-level need to write their own scripts.
Windows can have scheduled tasks or write programs (java,.net) to do the scheduling
It's a dispatch, plainly.

Use Crontab.

PHP has a way to ignore the user close the window can run for a short period of time

  */2 * * * */ Path/to/your/php/path/to/your/php/script >>/tmp/oxox.log  

Crontab

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