PHP code for People and Keyword Search

Hi, I installed a module where I can create a PHP block and insert it on any page... how can I find the PHP code for "People Search"  and for "Keyword Search" ?

Thanks

Naser

Site's search PHP code:

echo $GLOBALS['oFunctions']->genSiteSearch();

People's search PHP code:

bx_import('BxDolProfileFields');
$oPF = new BxDolProfileFields(9); // 9 - simple search, 10 - quick search, 11 - advanced search
echo $oPF->getFormCode();