Unable to update data in MySQL using PHP PDO Prepared

Question

This is my code:

<?php
$servername = "localhost";
$username = "root";
$password = "";

try {
    $conn = new PDO("mysql:host=$servername;dbname=site", $username, $password);
    // set the PDO error mode to exception
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

// prepare sql and bind parameters
    $stmt = $conn->prepare("UPDATE site_users SET users_email_verified = :users_email_verified WHERE users_email = :users_email ");

    $stmt->bindParam(':users_email_verified', $users_email_verified,PDO::PARAM_STR);
    $stmt->bindParam(':users_email',$_GET["email"],PDO::PARAM_STR);

    $users_email_verified = "yes";

    $stmt->execute();
    echo "done";

    }
catch(PDOException $e)
    {
    echo "Connection failed: " . $e->getMessage();
    }
?>

But it does not update the record.

But If I write the email directly inside $user_email variable (manually), like this

$users_email = "xyz@example.com";

Then the code works.

I do not understand why? How to fix it?

Answer 1

You have set the binding to be INTEGERS instead of STRINGS here:

$stmt->bindParam(':users_email_verified', $users_email_verified,PDO::PARAM_INT);
$stmt->bindParam(':users_email',$_GET["email"],PDO::PARAM_INT);

You should use PDO::PARAM_STR instead.

It also appear that you're not reporting errors, so you should check your web server's error logs for additional information.