undefined index error in php and How to fix it

Question

I am a beginner in PHP

I have created the PHP file below.

It gives Notice: Undefined index: payment in this page.

I keep getting this message can anyone help me out if possible please? I don't notice anything wrong with my line.

<form method="post" enctype="multipart/form-data">
  <div class="col-sm-10 col-sm-offset-1">
    <div class="col-sm-3">
      <div class="choice" data-toggle="wizard-radio" rel="tooltip" 
        title="" data-original-title="Select Any One    Package">
        <input type="radio" name="payment" value="12permonth">
        <div class="icon">
          <i class="fa fa-circle" aria-hidden="true"></i>
        </div>
        <h6>$12 Per Month</h6>
      </div>
    </div>

    <div class="col-sm-3">
      <div class="choice" data-toggle="wizard-radio" rel="tooltip" 
        title="" data-original-title="Select Any One    Package">
        <input type="radio" name="payment" value="30peryear">
        <div class="icon">
          <i class="fa fa-circle" aria-hidden="true"></i>
        </div>
        <h6>$30 Per Year</h6>
      </div>
    </div>

    <div class="col-sm-3">
      <div class="choice" data-toggle="wizard-radio" rel="tooltip" 
        title="" data-original-title="Select Any One    Package">
        <input type="radio" name="payment" value="39perfiveyear">
        <div class="icon">
          <i class="fa fa-circle" aria-hidden="true"></i>
        </div>
        <h6>$39 Per 5Year</h6>
      </div>
    </div>

    <div class="col-sm-3">
      <div class="choice" data-toggle="wizard-radio" rel="tooltip" 
        title="" data-original-title="Select Any One    Package">
        <input type="radio" name="payment" value="skippayment">
        <div class="icon">
          <i class="fa fa-circle" aria-hidden="true"></i>
        </div>
        <h6>Skip Payment</h6>
      </div>
    </div>
    <input type='submit' class='btn btn-finish btn-fill btn-success 
      btn-wd' name='finish' value='Finish' />
</form>
<?php

include('conn.php');

if (isset($_POST['finish']))
{
  $payment = mysqli_real_escape_string($conn, $_POST["payment"]);
  if ($_POST['payment'] == "skippayment")
  {
    echo "payment skipped";
  }
}
?>

How to fix this error?

score 2 · Answer 1 · answered Jan 26 '18 at 11:27

Its complaining that you are accessing payment inside $_POST.

Try this:

<?php

include('conn.php');

if (isset($_POST['finish']) && isset($_POST['payment'])) {

    $payment = mysqli_real_escape_string($conn, $_POST['payment']);

    if ($_POST['payment'] == 'skippayment') {
        echo 'payment skipped';
    }
}

user2342558 · Accepted Answer · 2018-01-26T11:39:52.650

1

The error occurs at the first page opening because at that point the user haven't already pressed the form's submit button.

So, use this code:

if(!empty($_POST['finish']))
{
    if(isset($_POST['payment']))
    {
        $payment = mysqli_real_escape_string($conn,$_POST["payment"]);

        if($_POST['payment'] == "skippayment")
        {
            echo "payment skipped";
        }
    }
    else echo "payment empty";
}

edited Jan 26 '18 at 11:39

answered Jan 26 '18 at 11:26

user2342558

5,567
5
33
54

I tried it...i choosed skipp payment but it is not posted – Archi Patel Jan 26 '18 at 11:37
try now with my edit – user2342558 Jan 26 '18 at 11:40
it gives payment empty @user2342558 – Archi Patel Jan 27 '18 at 03:11
@ArchiPatel it gives it because the `$_POST['payment']` isn't set at the `if`. – user2342558 Jan 29 '18 at 08:34

score 1 · Answer 3 · answered Jan 26 '18 at 11:29

1

You checked if $_POST['finish'] exists, but did not check if $_POST['payment'] exists before trying to reference it.
So initially the $_POST array does not contain the item 'payment' - hence cannot find the index 'payment' (in the $_POST array).

answered Jan 26 '18 at 11:29

GDB

37
4

undefined index error in php and How to fix it

3 Answers3