Php generates an Sn. how can this problem be solved?

Php generates a line number. I want to create a button in html. click it and use php to automatically generate a line number like a bank system and insert it into the database. please help me, the column in the DB table is auto_increment. Each insert operation automatically adds 1 ., it depends on how your data volume is arranged. it is a whole segment and then inserted together to generate a line number.
I want to create a button in html, click it, and use php to automatically generate a line number like a banking system, and insert it into the database. please help

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The column in the DB table is auto_increment, and 1 is automatically added for each insert operation.

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It depends on how your data is arranged, whether it is a whole segment and then inserted together or a condition, if it is a licensed method, the design time is int and auto-increment, 1 is automatically added at the time of insertion.
It is best to clarify the structure of your data requirements.