Insert data to table in php/mysql & automated insert date

user table:

User_ID
Username
Password
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campus table:

Campus_ID
Campus_name
Campus_Addres
Campus_DateCreate
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edit campus table

Edit_ID
Campus_DateEdit
User_ID
Campus_ID
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I have 3 tables, when i edit data using form, I want in table edit campus, automated insertedUser_ID, andCampus_ID, and the date automated inserted from current date. how do I do this with PHP syntax?