Selam arkadaşlar,

Bir para çekim talebi formumuz var. Bu forumda çekilen paradan %40 komisyon kestirmek istiyoruz. Bunu çekim aşamasında nasıl yaparız?
Form içeriği;
<div class="card-body">
                <div id="pay-invoice">
                    <div class="card-body">
                        <div class="card-title">
                            <h3 class="text-center">Request a payout</h3>
                            
                        </div>
                        <center><p style="color:red"><i>Attention: 40% commission will be deducted from the withdrawal request you create. Create a withdrawal request accordingly.</i></p></center>
                        <div class="text-center">
                        
                            <?php echo $session->message; ?>
                        
                        </div>
                        <hr>
                        <form action="" method="post">
                            <div class="row form-group">
                                <div class="col col-md-3">
                                    <label for="disabled-input" class=" form-control-label">Payment Address</label>
                                </div>
                                <div class="col-12 col-md-9">
                                    <input type="text" id="disabled-input" name="disabled-input" placeholder="<?php echo $user->payment_address; ?>" disabled="" class="form-control">
                                    <small class="help-block form-text">You can change it on profile page</small>
                                </div>
                            </div>
                            <div class="form-group">
                                <label for="cc-payment" class="control-label mb-1">Amount to withdraw</label>
                                <input name="amount" type="text" class="form-control" aria-required="true" aria-invalid="false" value="0.5">
                            </div>

                            <div>
                            <button id="payment-button" type="submit" class="btn btn-lg btn-info btn-block" name="request">
                                <i class="fa fa-lock fa-lg"></i>&nbsp;
                                <span id="payment-button-amount">Request</span>
                            </button>
                            </div>
                        </form>
                    </div>
                </div>
            </div>
Form controlleri;
 
<?php

if(isset($_POST['request'])) {
    
    $address = $user->payment_address;
    $amount = $_POST['amount'];
    
    if($user->payment_address == "No Address") {
        $session->message = "<div class='alert alert-warning' role='alert'><strong>Warning!</strong> Please add a {$setting->currency} address to be able to withdraw!</div>";
    } else {
        
        if(!is_numeric($amount)) {
        
        $session->message = "<div class='alert alert-warning' role='alert'><strong>Warning!</strong> Something went wrong, please try again!</div>";
        
    } else {
        
        if($amount < $setting->min_payout) {
            
        $session->message = "<div class='alert alert-warning' role='alert'><strong>Warning!</strong> {$setting->min_payout} {$setting->currency} minimum to withdraw!</div>";
            
           } else {
        
              if($user->balance < $amount) {
                  
                 $session->message = "<div class='alert alert-warning' role='alert'><strong>Warning!</strong> Your balance is lower than your request!</div>";
                  
              } else {

                 $add = Users::add_request($user->username, $address, $amount);
            
                 if($add) {

                    $user->balance = $user->balance - $amount;

                    $user->update();

                    $session->message = "<div class='alert alert-info' role='alert'><strong>Success</strong> Your request was recorded!</div>";
                
            }
            
            
            
        }
        
    }
        
    }
        
    }
    
}


?>