title: Storing timestamps in mySQL
body: <p>I remember I read somewhere that mySQL timestamp data type is used to be updated automatically when the row updates, is this true?</p>
  
  <p>Do I have to store timestamps with timestamp datatype or with bigint for example?</p>
  
  <p>NB: the timestamp that has to be stored is not generated by mySQL, it's a pre-defined value that will be generated with PHP.</p>
  
  <p>Thanks.</p>