[Send message to all email addresses in database table]

<?php
// Database connection
$servername = "localhost";
$username = "u880577714_enbullsnbears";
$password = "Olagoro4";
$dbname = "u880577714_enbullsnbears";

try {
    $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

    // Retrieve email addresses
    $stmt = $conn->prepare("SELECT email FROM user");
    $stmt->execute();
    $emails = $stmt->fetchAll(PDO::FETCH_COLUMN);

    // Send emails
    
    $subject = $_POST['subject'];
    $message = $_POST['message'];
    $headers = "From: support@en.bullsnbearstraders.online";

    foreach ($emails as $email) {
        mail($email, $subject, $message, $headers);
        echo "Email sent to: $email<br>";
    }
} catch(PDOException $e) {
    echo "Connection failed: " . $e->getMessage();
}
?>