Xampp error in php (defining variables?)

Question

After 2 days of trying to fix my problem myself i gave up :( So will try to get help here. My problem is that xampp gives me this error :

Notice: Undefined index: name in C:\xampp\htdocs\portfolio\index.php on line 78 Notice: Undefined index: email in C:\xampp\htdocs\portfolio\index.php on line 79 Notice: Undefined index: message in C:\xampp\htdocs\portfolio\index.php on line 80 Notice: Undefined index: human in C:\xampp\htdocs\portfolio\index.php on line 84 Notice: Undefined index: submit in C:\xampp\htdocs\portfolio\index.php on line 88

I managed to find that i need define variables before using them, or check for existence,But my knowledge of PHP is in its very basics. Could someone help me with that?

<section id="contact">
<h3>Contact me :</h3>
<?php
    $name = $_POST['name'];
    $email = $_POST['email'];
    $message = $_POST['message'];
    $from = 'From: Example'; 
    $to = '[email protected]'; 
    $subject = 'Hello';
    $human = $_POST['human'];

    $body = "From: $name\n E-Mail: $email\n Message:\n $message";

    if ($_POST['submit']) {
    if ($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="index.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>*What is 2+2? (Anti-spam)</label>
<input name="human" placeholder="Type Here">

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

</form>


</section>

Since there is no POST request, the variables such as $_POST['name'] is not defined, so XAMP gives that error. — Subin

Subin Subin · Accepted Answer · 2013-10-24T13:11:08

Since there is no POST request, the variables such as $_POST['name'] is not available, so PHP gives that error. What you need to do is check if a $_POST request has been made, then define the variables :

<?php
if(isset($_POST['submit'])){
    $name = $_POST['name'];
    $email = $_POST['email'];
    $message = $_POST['message'];
    $from = 'From: Example'; 
    $to = '[email protected]'; 
    $subject = 'Hello';
    $human = $_POST['human'];

    $body = "From: $name\n E-Mail: $email\n Message:\n $message";

    if ($_POST['submit']) {
    if ($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>';
    }
}
}
?>

Xampp error in php (defining variables?)

2 Answers