Generate Custom and Unique ID by using php and mysql

This is PHP code for Generate Custom Unique id. If you are developing web applications like: student online registration, Employee Management System, Patient Management System. So how to generate Unique and Customized own id mix of string and numbers. this code helps you for unique ID. Friends this id generates after you are submitting the form.

[@sonatonifans]

thanks for sharing your idea

[@AshishKashyap-zq8ws]

bhaut badiya Sir Ji :)

[@risingjack7066]

Amazing, got my load off. Thanks, bro.

[@mayuritatiya5573]

Thank you

[@shiblioffset7606]

Its not working increase the number. please help

[@mr.gauravji3881]

Sir code work nahi ho raha h sir

[@afiqahsaid5763]

may i know what is the datatype for student_id? is it int or varchar? thank you in advance

[@dplibrary1]

As you like

[@khtissantik6056]

what type student_id?

[@M12Designer]

Please share source code.
And is method Ka Kiya bolta hai.

[@AyushGupta-ke9ik]

iske code kaha h sir ji

[@loveleenbatra5833]

Mine is not working ,only white screen shows on clicking button
Please tel the problem?

[@Latest4kmovies]

mysqli_num_rows() expects parameter 1 to be mysqli_result, boolean given in SIR error aa rhi hai

[@radhamadhu1341]

Sir it's generating error phars error

[@davidiiyambo]

Good day, can you please share your source code?