I agree, RTM and scoure some examples. In it's simplest form if the php.ini settings are as Vincent says for global variables:
HTML FORM PAGE
<BODY>
<FORM ACTION=mypage.php METHOD=POST>
Enter Your Name:
<INPUT NAME="field1" TYPE=TEXT>
</FORM>
</BODY>
MYPAGE.PHP HANDLER
<BODY>
Your Name is:
<php?
echo "$field1";
?>
</BODY>
