将包含数组的表单数据安全插入到mysql数据库中

Question

I found many answers about how to insert form data into mysql using PDO, also I found some answers related to insert data from an array like this one but actually my problem is related to the third question in my form for which I am not sure if I wrote the query in a correct way

This is my code but it give me this error:

PHP Parse error: syntax error, unexpected ';' in line ... (the line related to insert statement)

<?php
session_start();

if(isset($_POST['submit']))
{
 $_SESSION['q1'] = $_POST['q1'];
 $_SESSION['q2'] = $_POST['q2'];
 $_SESSION['q3'] = implode(',', $_POST['genre']);

 $q1 = mysql_real_escape_string($_SESSION['q1']);
 $q2 = mysql_real_escape_string($_SESSION['q2']);
 $q3 = mysql_real_escape_string($_SESSION['q3']);

 $conn = new PDO('mysql:dbname=Application;host=localhost;charset=utf8', 'user', 'xxxx');
 $conn->setAttribute(PDO::ATTR_EMULATE_PREPARES, false);
 $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
 $stmt = $conn->prepare('INSERT INTO test (q1, q2, q3) VALUES (:q1, :q2, :q3)');
 $stmt->execute(array(':q1' => $q1,':q2' => $q2,':q3' => ".$q3."));
 }

 catch(Exception $e) {
     echo 'Exception -> ';
     var_dump($e->getMessage());
  }

 header('Location: Thankyou.php');
   exit;
}
?>

Answer 1

First of all don't mix mysql with PDO, Also use try with catch exception and

change

$stmt->execute(array(':q1' => $q1,':q2' => $q2,':q3' => ".$q3."));

to

$stmt->execute(array(':q1' => $q1,':q2' => $q2,':q3' => $q3));