query mysql in php to get the difference between two tables -

i have 2 tables same structure users finger print data , want first table data not exist in second table , insert second table structure of 2 tables:

• id
• user_id
• check_time
• check_type
• sensor_id

you can use insert select from using additional join as

insert table2  select  t1.* table1 t1 left join table2 t2 on t1.user_id = t2.user_id , t1.check_time = t2.check_time t2.user_id null , t2.check_time null