Want to create an application uses registration and login

Certified Associate Developer

Hello Guys,I was just looking to develop gym management system application.
Link - https://phpgurukul.com/gym-management-system-using-php-and-mysql/
same as this ,i want to develop. can i create login pages or dashboards for it. where the customer can choose a package and book it. and manage all the purchases with records.

Please help me into getting clear out of it.

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