Zploit 0-Day Shell

:: Editing File: payment_register.php

<?php
include('db_config.php');
include('login_header.php');

$email = $_GET['email'] ?? '';

if (empty($email)) {
    header("location: register.php?error=" . urlencode("Email context missing for payment."));
    exit;
}
?>

<div id="page-content">
    <div class="login-form">
        <div class="container">
        <div class="row">
            <div class="col s12 m8 l6 offset-m2 offset-l3">
                <div class="section-title center-align">
                    <center><a href="index.php"><img src="logo/logo.png" width="350px;"></a></center><br>
                    <span class="theme-secondary-color">Register</span>  Payment 
                </div>

<div class="card-panel payment-card center-align">
                    
                   
                    <form action="payment_success_action.php" method="POST" class="center-align" enctype="multipart/form-data">
                        
                        <div class="input-field">
                            <input type="email" id="email_display" value="<?php echo htmlspecialchars($email); ?>" readonly>
                            <label for="email_display" class="active">Email ID </label>
                        </div>
    
                        <p class="instructions">Scan the QR code below to complete the Register Payment Process .</p>
    
                        <div class="qr-code">
                            <img src="logo/qr_code.png" alt="QR Code for ₹10 Payment">
                        </div>
    
                        <h6 style="color: #ff6600;">Amount: ₹10.00</h6>

<div class="file-field input-field">
                            <div class="btn waves-effect waves-light" style="background-color: #ff6600;">
                                <span>Upload Payment Receipt</span>
                                <input type="file" name="payment_receipt" accept="image/*" required>
                            </div>
                            <div class="file-path-wrapper">
                                <input class="file-path validate" type="text" placeholder="Upload screenshot of successful payment">
                            </div>
                        </div>
                        
                       
                        <button type="submit" class="btn waves-effect waves-light submit-btn" style="background-color: green !important;">
                            Submit UTR & Activate Account
                        </button>
                    </form>
                    
                <p style="margin-top: 20px;">Payment Issue? <a href="register.php?error=Payment+Failed">Return to Registration</a></p>
                </div>
            </div>
        </div>
    </div>
    </div>
</div>

<?php include('login_footer.php'); ?>