<?php
session_start();

$conn = pg_connect("host=localhost port=5432 dbname=alc user=postgres password=postgres");

$training_id= "SELECT m.training_mst_id FROM tbl_user u, training_mst m WHERE u.user_id = m.trainer_id AND m.start_traning >= now() AND m.end_traning <= now() AND m.trainer_id = ".$_SESSION['user_id'];
$result = pg_query($conn,$training_id);
$query = "UPDATE training_mst set status='TRUE' where training_mst_id= ".$training_id;
$result2 = pg_query($conn,$query);

?>