it’s possible for you to, however, use a PS4 controller with the PS3.
Turn on your PS4 by pressing the console’s power button.
It should automatically detect your connected controller and assign it to the first available player slot.

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Navigate toSettings>Devices>Bluetooth Devices.
You should see a list of devices presently synced with your console.
On the PS4 controller you wish to sync, hold down thePSbutton and theSharebutton simultaneously for five seconds.
When the new controller appears in the list of Bluetooth equipment, select it with the other controller.
The new controller will then be synced with your PS4.
How to Unpair a PS4 Controller
confirm to turn off the controller you wish to unpair.
Using another PS4 controller, turn on your console.
From the PS4 home menu, navigate toSettings>Devices>Bluetooth Devices.
You should see a list of controllers.
go for the one you wish to unpair and chooseForget gear.
If you have an extra cable handy, try using that instead to eliminate the first possibility.
If your other PS4 controllers are working wirelessly, the faulty controller is to blame.
If you’re unable to pair a PS4 controller with your console,try resetting it.
Under Detected Controllers, choose your PS4 controller and selectPreferencesto configure the configs.
Toconnect a PS4 controller to a PlayStation 5, plug the controller into your PS5.
If you still can’t sync your controller, you might need to reset it.