[Urgent] I need to process a PHP page in Background when the visitor is already redirected to another page

Job ID: 31539323

Budget: €30 – €250 EUR

Hello,
I need a specific sequence :

1- I call a HTML page.
2- In that HTML page I call a PHP file in background.
3- I don't wait for the php page to be processed, AND redirect directly the visitor to another page.
4- The PHP page MUST CONTINUE be processed in background .

This project will be used to automate IOT devices?
Related categories: PHP JavaScript AJAX CSS HTML5