form input variables dissapear

codesters

My computer runs Win 2000 IIS 5 and php 4.2.1
Having trouble with this.
The variables from the form should get posted back to itself and echo a message. But it dosent work. The variables just dont show up? Its not the code. That works fine. Something to do with the contiguration I think. Changed servers to apache and back, no change , updated and reinstalled php, no change.

<?php

//Handle Input here
//Check if $submit has a value of "Go" - The Validator
if($submit=="Go"){
//The Processor
echo("You wrote ".$you_wrote);
echo("<br>You could have done whatever you want with the input instead");
exit;
}

<form action="<?php echo $PHP_SELF ?>" method="POST" >
<p>Input a word <input type="text" size="20" name="you_wrote">
<input type="submit" name="submit" value="Go"></p>
</form>

Anon

You're probably used to having register_globals = on. This is turned off by default since 4.2.0.

I changed your code around a bit according to my coding style. I'm quite fond of using the associative arrays that PHP provides.

This works on apache (I have no experience with IIS):

<?php
//Handle Input here
//Check if $submit has a value of "Go" - The Validator
if(isset($HTTP_POST_VARS['userquery'])){
//The Processor
echo("You wrote " . $HTTP_POST_VARS['userquery'] . "<br>\n");
echo("You could have done whatever you want with the input instead\n");
exit;
}
?>

<form action="<?php print($_SERVER['PHP_SELF']); ?>" method="POST">
Input a word : <input type="text" name="userquery"><input type="submit">
</form>

codesters

thanks I can stop pulling my hair out.

The code was from the book professional PHP4 by wrox press.