php - How can I check data has been inserted successfully? -

I have two entry statements, second only, will be executed only after successful execution of the first. What do I do:

  $ sqlone = "Enter ....."; $ Sqltwo = "Insert ....."; If (mysql_query ($ sqlone)) {if (mysql_query ($ sqltwo)) {Show the message put in both tables. }}  

try it

  $ query1 = '...'; $ Query2 = '...'; $ Query3 = '...'; If (mysql_query ($ query1)) {if (mysql_query ($ query2)) {if (mysql_query ($ query3)) {echo "success"; } And {echo "error"; }} And {echo "error"; }} And {echo "error"; }