Insert Query doesn't works - php

Question

I have made my insert query in the script, but when it starts instead an error like this
Warning: pg_query(): Query failed: ERROR: syntax error at or near ":" LINE 2: Notice: Undefined variable: row in D:\xampp\htdocs\Feedback... ^ in D:\xampp\htdocs\FeedbackALC\user\send_mail.php on line 60
my script :
<?php
session_start();
require 'phpmailer/PHPMailerAutoload.php';
$email = $_POST['email'];
$password = $_POST['password'];
$to_id = $_POST['toid'];
$to_id2 = $_POST['toid2'];
$message = $_POST['message'];
$subject = $_POST['subject'];
$mail = new PHPMailer;
$mail->isSMTP();
$mail->Host = 'smtp.gmail.com';
$mail->Port = 587;
$mail->SMTPSecure = 'tls';
$mail->SMTPAuth = true;
$mail->Username = $email;
$mail->Password = $password;
$mail->setFrom('learningCenter#anabatic.com', 'Anabatic Learning Center');
$mail->addReplyTo('learningCenter#anabatic.com', 'Anabatic Learning Center');
$mail->addAddress($to_id);
$mail->Subject = $subject;
$mail->msgHTML($message);
$mail2 = new PHPMailer;
$mail2->isSMTP();
$mail2->Host = 'smtp.gmail.com';
$mail2->Port = 587;
$mail2->SMTPSecure = 'tls';
$mail2->SMTPAuth = true;
$mail2->Username = $email;
$mail2->Password = $password;
$mail2->setFrom('learningCenter#anabatic.com', 'Anabatic Learning Center');
$mail2->addReplyTo('learningCenter#anabatic.com', 'Anabatic Learning Center');
$mail2->addAddress($to_id2);
$mail2->Subject = $subject;
$mail2->msgHTML($message);
if($mail->send()&&$mail2->send()){
echo "Mail berhasil terkirim";
} else {
echo "mail failed send";
$error = "Mailer Error: " . $mail->ErrorInfo;
?>
<script>alert('<?php echo $error ?>');</script>
<?php
}
include "../connect.php";
$training_dtl_id = "(select max(training_dtl_id)+1 from training_dtl)";
$training_mst_id = strip_tags($_POST['id']);
$user_id = $_SESSION['user_id'];
$create_by = $_SESSION['user_name'];
$change_by = $_SESSION['user_name'];
$query = "INSERT into training_dtl values (".$training_dtl_id.",".$training_mst_id.",".$user_id.",now(),".$create_by.",now(),".$change_by.",FALSE)";
$result = pg_query($conn, $query);
?>