URGENT HELP REQUIRED PLEASE READ !!!

ykel

I am a novice programmer in php, just starting recently I encounntered some
problems when I load my code into the browser.

I tried to develop a form that is to be processed on thesame page.
For example , writing a form with its validation codes on the same page , I get an
Error message like this: “undefined index: form-field-Name ”.I get a message telling me that the form fields are undefined.

Initially, I would send the form field names to a second page, using the super global arrays, and then write codes to process the form on the second page.This gave no problems.

But as proceeded in my study, I came to learn how I could process the form
on thesame page intsead of sending the fields to another page to be processed

Below is one of the forms I tried to run in a browser and the errors messages I got.

Notice: Undefined index: firstName in D:\Sites\study\Practice\P2\test11.php on line 2

Notice: Undefined index: lastName in D:\Sites\study\Practice\P2\test11.php on line 3
, you have been registered

Below is the code for the form shown above.

<?php
$Fname=$POST['firstName'];
$Lname=$POST['lastName'];

echo "$Fname $Lname, you have been registered";

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>

</head>
<body>
<form action="<?=$_SERVER['PHP_SELF'];?>" method="POST">

The code below is from the book I am using to study, and in the book, these codes gave an output without error.

<?php
if ($POST['submit'] == "Submit Data")
{
echo "Your First Name is: " . $POST["FName"] . "<br/>";
echo "Your Last Name is: " . $POST["LName"] . "<br/>";
echo "Your City is: " . $POST["City"] . "<br/>";
echo "Your State is: " . $POST["State"] . "<br/>";
echo "<br/>";
echo "Your Message is: " . $POST["Message"];
}
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD/XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml11-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>A Web Page</title>
</head>
<body>
<form action="form_process.php" method="post">
First Name: <input type="text" name="FName"/>
Last Name: <input type="text" name="LName"/>
City: <input type="text" name="City"/>
State: <input type="text" name="State"/>
Message: <textarea name="Message" cols="30" rows="5"></textarea>
<input type="submit" name="submit" value="Submit Data"/>
</form>
</body>
</html>

Please help me rectify the problem, I have no idea of what the problem is, I am using php5 and apache2
Almost all the books I am using have given examples in this way, I don’t know why exactly I am getting this error. Thankyou.

NogDog

Welcome to PHPBuilder, Ykel.

A couple tips:

Use meaningful thread titles that describe the nature of the topic. "HELP ME" titles may not attract someone who knows the answer, may actually annoy someone who could help, and make it difficult for others who might have the same problem to locate your thread via a web/forum search.
Use this forum's [noparse]
```
...
```
[/noparse] bbcode tags around your code samples, making them much easier to read.

As to your question, the problem is trying to address an element of an array ($POST in this case) which does not exist, presumably because the form has not yet been submitted. You can address this with conditional code that first checks to see if they have been set:

<?php
if(isset($_POST['firstName']))
{
   echo "<p>Hello, " . $_POST['firstName'] . " " . $_POST['lastName'] . "</p>\n";
}
else
{
   echo "<p>Please enter both First Name and Last Name.</p>\n";
}