php - How to insert a id of a new row into another linking table? -


I have a table with the aim of adding two other tables with the foreign key (Table 3).
But I do not know how to query a PHP which will get the generated id of new line in Table 2?
(ID of the table that I have stored in a php variable)
I am looking into the smart storage process?

Steps to follow :

    < li> Insert a line in table2 .
  • Find the key generated from table2 and type it in the PHP variable 
     - say it in a PHP variable, say Are, $ last_key SELECT LAST_INSERT_ID (); Use the  insert  statement in  $ last_key  for  table3 .

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