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Edit File: form_validation.php

<?php

use PHPMailer\PHPMailer\PHPMailer;
use PHPMailer\PHPMailer\Exception;

require __DIR__ . '/PHPMailer/src/Exception.php';
require __DIR__ . '/PHPMailer/src/PHPMailer.php';
require __DIR__ . '/PHPMailer/src/SMTP.php';

function sendMail($name, $email, $phone, $message){

// ✅ Prevent XSS
    $name    = htmlspecialchars($name);
    $email   = htmlspecialchars($email);
    $phone   = htmlspecialchars($phone);
    $message = nl2br(htmlspecialchars($message));

$mail = new PHPMailer(true);

try {

// 🔥 Enable ONLY when debugging
        // $mail->SMTPDebug = 2;

$mail->isSMTP();
        $mail->Host       = 'smtp.gmail.com';
        $mail->SMTPAuth   = true;
        $mail->Username   = 'info@pinnacle-s.com';
        $mail->Password   = 'zzaualxzrsmbqvrq'; // ✅ replace
        $mail->SMTPSecure = PHPMailer::ENCRYPTION_STARTTLS;
        $mail->Port       = 587;

// ⭐ Recommended
        $mail->SMTPAutoTLS = true;

// Sender MUST match SMTP username
        $mail->setFrom('developers@code7tech.com', 'Website Enquiry');

// Admin Emails
        $mail->addAddress('info@pinnacle-s.com');
        $mail->addAddress('developers@vervemedia.co.in');

// Reply goes to customer
        $mail->addReplyTo($email, $name);

$mail->isHTML(true);

$mail->Subject = "New Website Enquiry - " . date("jS F Y");

// ✅ Professional Email Template
        $mail->Body = "
        <div style='font-family:Arial; max-width:600px;'>

<h2 style='color:#2d89ef;'>New Contact Enquiry</h2>

<tr>
                    <td style='padding:8px;border:1px solid #ddd;'><b>Email</b></td>
                    <td style='padding:8px;border:1px solid #ddd;'>{$email}</td>
                </tr>

<tr>
                    <td style='padding:8px;border:1px solid #ddd;'><b>Phone</b></td>
                    <td style='padding:8px;border:1px solid #ddd;'>{$phone}</td>
                </tr>

<tr>
                    <td style='padding:8px;border:1px solid #ddd;'><b>Message</b></td>
                    <td style='padding:8px;border:1px solid #ddd;'>{$message}</td>
                </tr>
            </table>

</div>
        ";

$mail->send();

return [
            "success" => true,
            "msg" => "Mail sent successfully"
        ];

} catch (Exception $e) {

return [
            "success" => false,
            "msg" => $mail->ErrorInfo
        ];
    }
}