Progress bar using PHP data from SQL Server start and stop button

i need help for my case. Need example for finished this.Like my picture. i want to make Allocation Job for mechanic, Mechanic name and License Plate source from sql , when i press start button , bar progress will run(maybe 8 clock) and when i press stop button (maybe at 10 clock) that progress will stop at 10 clock. any body can help me?
I really thanks when somenone can help me.

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