Notice: Undefined index $_POST

Question

I am new to php and I made a contact form but i get a

Notice: Undefined index: name in C:\xampp\htdocs\portfolio\portfolio\html\contact.php

for the lines $_POST - Name, email, message and human.

How can I get take the error away??

                                    $name = $_POST['name'];
                                    $email = $_POST['email'];
                                    $message = $_POST['message'];
                                    $from = 'From:'; 
                                    $to = '86376@ict-idcollege.nl'; 
                                    $subject = 'Hello';
                                    $human = $_POST['human'];

                                    $body = "From: $name\n E-Mail: $email\n Message:\n $message";
                                        if (isset($_POST['submit'])) {
                                            if ($name != '' && $email != '') {
                                                if ($human == '4') {                 
                                                    if (mail ($to, $subject, $body, $from)) { 
                                                    echo '<p>Your message has been sent!</p>';
                                                } else { 
                                                    echo '<p>Something went wrong, go back and try again!</p>'; 
                                                } 
                                            } else if ($_POST['submit'] && $human != '4') {
                                                echo '<p>You answered the anti-spam question incorrectly!</p>';
                                            }
                                            } else {
                                                echo '<p>You need to fill in all required fields!!</p>';
                                            }
                                        }
                                ?>
                                <form method="post" action="contact.php">

                                    <label>Name</label>
                                    <input name="name" placeholder="Type Here">

                                    <label>Email</label>
                                    <input name="email" type="email" placeholder="Type Here">

                                    <label>Message</label>
                                    <textarea name="message" placeholder="Type Here"></textarea>

                                    <label>*Wat is 2+2? (Anti-spam)</label>
                                    <input name="human" placeholder="Type Here">

                                    <input id="submit" name="submit" type="submit" value="Submit">

                                </form>

1

use `isset` for this. – Yogesh Suthar Aug 20 '13 at 09:49

score 3 · Answer 1 · answered Aug 20 '13 at 09:51

3

By using isset or !empty:

<?php
    $name    = (isset($_POST['name'])    ? $_POST['name']    : '');
    $email   = (isset($_POST['email'])   ? $_POST['email']   : '');
    $message = (isset($_POST['message']) ? $_POST['message'] : '');
?>

answered Aug 20 '13 at 09:51

h2ooooooo

39,111
8
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score 1 · Answer 2 · edited Aug 20 '13 at 13:00

1

Just Make Changes this in your code :

if (isset ($_POST['name'])) {
  $name = $_POST['name'];
}
if (isset ($_POST['email'])) {
  $email = $_POST['email'];
}
if (isset ($_POST['message'])) {
  $message = $_POST['message'];
}

$from = 'From:';
$to = '86376@ict-idcollege.nl';
$subject = 'Hello';

if (isset ($_POST['human'])) {
  $human = $_POST['human'];
}

edited Aug 20 '13 at 13:00

Bora

10,529
5
43
73

answered Aug 20 '13 at 09:52

Harshal

3,562
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65

Now `$name`, `$email`, `$message` and `$human` would be either `false` or `true`. From the manual: *Returns TRUE if var exists and has value other than NULL, FALSE otherwise.* – h2ooooooo Aug 20 '13 at 09:52
All vars now `true` or `false`. Totaly wrong answer! – Bora Aug 20 '13 at 09:53
i have make changes in my code now – Harshal Aug 20 '13 at 09:57

score 0 · Answer 3 · answered Aug 20 '13 at 09:52

0

place the code you have above inside a test block as follows

 if (isset($_POST['submit'])) {
   $name = $_POST['name'];
   $email = $_POST['email'];
  ...
  until the end of ?>

this is because when ever the page loads without the form submission. (because you have the control logic and display logic in the same file) it executes the code on the top.

answered Aug 20 '13 at 09:52

DevZer0

13,433
7
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I realised what I did and as you said i had to move the if (isset($_POST['submit'])) { – Aug 20 '13 at 10:00

Notice: Undefined index $_POST

3 Answers3