Debugger for PHP? - mail problems

[Klarstein]

hi

is there a debugger for PHP with which each step of a script can be followed to see which values variables have at a given time?

my problem:

i have an html form which through the action "post" goes to the following php-script:

<?
$InterestedIn = $REQUEST['InterestedIn'];
$SenderName = $REQUEST['SenderName'];
$SenderMail = $_REQUEST['SenderMail'];
$msgdetails = "Purchase interest:\n\n
$InterestedIn\n\n
From: $SenderName $SenderMail";
mail ( "[e-mail]", "enquiry Form", $msgdetails, "From: <$SenderMail>" );
header( "Location: http://www.mydomain.com/OliveOils/thankyouARABIC.html" );

?>

in the mail i receive however i (a) do not get a proper "From" but only a generic address of the domain host the the site rests, and (b) only this static text appears:

Purchase interest:

From:

somehow i should be able to figure out what exactly php is doing. or does one see the beginners error at first glance?

with question marks written over my face
klarstein

[Klarstein]

Found the solution:

in the submission form one of the specifications was "enctype="text/plain". the moment i deleted this, php started to pick up the variable contents.

cheers
kleinstein