Problem in getting Form Data

prwong

I am using PHP4 and Apache 1.3
I followed the instruction to config the Apache in order to run PHP. Everything seems to work. I can connect MySQL by the php functions. But I have problem in getting the form data. From the examples, it said that i can get the form data in action php by the input file name plus a $ sign before it. However, when i put this variable in the php, error message "Undefined variable" is shown.

I don't know whether i miss some settings in the Apache. Can anyone help me? Thank you very much.

Priscilla

TodManPlaa

Hi,
Could you post a sample of the code that is not working correctly - it will be easier for people to help you then.

cheers

prwong

Thanks.

I have a HTML form like:
<html>
<body>
<form action="test.php">
<input type=text name="username"><br>
<input type=submit value="show">
</form>
</body>
</html>

test.php
<?php
echo $username;
?>

But after i click the submit button, in the test.php. I got error message:

Undefined variable on C:\Programs Files\Apache Group\Apache\htdocs\test.php line2

cheers,
Priscilla

MarkB423

Try on the form page...

(POST will hide the variable names from the web address, and GET will attach the variables to the URL)

TodManPlaa

It looks like you're missing the method attribute on your form tag.

Try altering it to:
<form method="post" action="test.php">

and see if that helps.

Mega

or try something that might even work 🙂

test.php

<?php 
echo $HTTP_POST_VARS['username'];
?>

form method defaults to post i think, but specify it anyway

flashman

Take care at the version of PHP you are using. After 4.1.x, the POST globals have changing. So, your test.php should looks like follows:

<?php
echo($_POST['username']);
?>

prwong

Thanks everyone.

And I have found the answer of my problem and want to share with you. I am using PHP4.2, i found in the document that the directive "register_globals" are set to off by default in php.ini. So that i can't get the form data by adding a "$" before the input type name. After i set it to on, everything works.

I hope it is also useful to you.

Cheers,
Priscilla