Select the Latest Message Between the communication of two user in mysql

Question

I have a simple table maintaining messages between users. The table structure looks like

     sender    receiver   message   sendtime
      1          2              


        

Answer 1

This will work out

$query = "SELECT * FROM tableName WHERE `sender`='$userNumber' OR `receiver`='$userNumber' ORDER BY `sendtime` DESC LIMIT 0,1";