FORMs (HELP) --- PHP Gurus (Please HELP)

Hi, How can be possible to call other functions (that have a html pages) from a first function that also have a html with a form and pass all html variables without losing them? I've a problem that from a html form I'm losing all html variables and this is happening because this form is located in the 3th function (one inside another)... If you know a better way to deal with this... I'm interested to learn... Thanks for all. Simple example that may work: file name: xyz.php function display($ref) { printf('The REF have %s",$ref); } function query() { echo('<FORM ENCTYPE="multipart/form-data" NAME="addimovel" METHOD=POST ACTION="xyz.php?pg=1&ref=$ref">); echo(' <TABLE> <TR> <TD>Ref</TD> <TD><INPUT type=text name="ref"></TD> </TR> <TR> <TD><INPUT border="0" src="baddaz.jpg" name="ADD" width="40" height="40" type="image"></TD> </TR> </TABLE> </FORM>'); } // PG options switch($pg) { case 1: display($ref); break; default: query(); break; }