PHP errors?

Frump · 01-20-2013, 06:22 AM

I am running Lubuntu 12.10 and having installed Xampp-1.8.1 started to learn PHP. All went well until i followed a tutorial which showed how a PHP script passes data to an html form.

The html form

Code:

<html>
<head>
</head>
<body>

<form action="form_script.php" method="POST">

<p>Name: <input type="text"  name="name" size="30"/></p>

<p>Shirt size:
<select name="size">
<option value="small">Small</option>
<option value="medium">Medium</option>
<option value="large">Large</option>
</select>
</p>

<p>Gender:
<input type="radio" name="gender" value="girl"/>Girl
<input type="radio" name="gender" value="boy"/>Boy
</p>

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

</body>
</html>

The php script

Code:

<?php

$name=$_POST['name'];
$size=$_POST['size'];
$gender=$_POST['gender'];

print "<p>Name: $name<br />Size: $size<br />Gender: $gender</p>";

?>

When i try to run the code all i get is:

Code:

Notice: Undefined index: name in /opt/lampp/htdocs/form_script.php on line 3

Notice: Undefined index: size in /opt/lampp/htdocs/form_script.php on line 4

Notice: Undefined index: gender in /opt/lampp/htdocs/form_script.php on line 5

Name:
Size:
Gender:

Could someone help me to resolve this problem please.

sunfighter · 01-20-2013, 11:57 AM

I don't have Lubuntu 12.10 or Xampp-1.8.1, but could the missing close tag for the form have any effect?

Code:

....
<input type="submit" name="submit" value="Submit"/>
</form>  <!--      ADD THIS-->
</body>
</html>

Frump · 01-20-2013, 03:58 PM

Hi sunfighter

Trust me to have made that mistake. But i have now rectfied the error.
There's still no improvement in the situation. For some reason when i call the html form it is only displayed as code?

Shall get the html form up to standard and validated.

tangoforce · 01-20-2013, 04:10 PM

Try this and get back to us with the results:

PHP Code:


			
<?php

var_dump($_POST);

$name=$_POST['name'];
$size=$_POST['size'];
$gender=$_POST['gender'];

print "<p>Name: $name<br />Size: $size<br />Gender: $gender</p>";

?>

Frump · 01-20-2013, 05:11 PM

Have finally worked it out by myself,lol. I was (as a noob) calling the php script via Firefox instead of the html form.

For example i was openning Firefox and typing: localhost/form_script.php and it was this that generated the errors.

On the other hand when i open Firefox and typed: localhost/simple_form.html
the form duly appeared and i successfully entered the required data.

Thanks for the help and advice all

Fou-Lu · 01-20-2013, 05:14 PM

That can be fixed by checking the isset status:

PHP Code:


			
<?php

if (isset($_POST['name'], $_POST['size'], $_POST['gender']))
{
    $name=$_POST['name'];
    $size=$_POST['size'];
    $gender=$_POST['gender'];

    print "<p>Name: $name<br />Size: $size<br />Gender: $gender</p>";
}
else
{
    header('Location: http://yoursite.com/yourform.html');
    exit();
}
?>

Would do it. You'll get very familiar with the isset construct in PHP.

tangoforce · 01-20-2013, 06:02 PM

Except he wasn't even submitting the form lol. Instead he was browsing to it lol.

Fou-Lu · 01-20-2013, 07:24 PM

Yep I know. But it would have redirected to the form assuming the header was changed for it.