connect(); $pgsqldb->query('SELECT result_time as "Result Time",voltage as "Voltage" FROM sample_mts310 WHERE nodeid=2 AND result_time > '.$date1.' and result_time < '.$date2.' ORDER BY result_time DESC LIMIT 25;'); echo $pgsqldb->getResultAsTable(); } elseif (($_POST['submit'] != "") ) { $operator = $_POST['operator']; $txtvoltage = $_POST['txtvoltage']; include "pgsql.class.php"; $pgsqldb = new pgsql("localhost","task","tele","tiny"); $pgsqldb->connect(); $pgsqldb->query('SELECT result_time as "Result Time",voltage as "Voltage" FROM sample_mts310 WHERE nodeid=2 AND voltage '.$operator.' '.$txtvoltage.' ORDER BY result_time DESC LIMIT 25;'); echo $pgsqldb->getResultAsTable(); } else { echo " ERROR : EMTPY FIELD MAYBE !"; } ?>