date("Y-m-d H:i:s")
$phpdate = strtotime( $mysqldate );
$mysqldate = date( 'Y-m-d H:i:s', $phpdate );
//mysql date now
date("Y-m-d H:i:s");
//convert mysql to int
$phpdate = strtotime( $mysqldate );
//and back
$mysqldate = date( 'Y-m-d H:i:s', $phpdate );