Convert GET to POST in PHP

Hello, I have three php functions. I need to convert the last two (processGET, processACH) from a GET to a POST. Thank You, function processRequest(){ global $config; $data = $_POST; $data['MerchantID'] = $config['MerchantID']; $data['RegKey'] = $config['RegKey']; $data['USER2'] = substr($data['AccountNo'],strlen($data['AccountNo'])-4); $req = new HTTPRequest('[login to view URL]','/bill/transac/[login to view URL]','POST',true); $req->connect(html_entity_decode(http_build_query($data))); $data = parseFields($req->getContent()); return $data; } function processGET(){ global $config; $data = $_POST; $data['MerchantID'] = $config['MerchantID']; $data['RegKey'] = $config['RegKey']; $data['Amount'] = number_format($data['Amount'], 2, '.', ''); $data['USER2'] = substr($data['AccountNo'],strlen($data['AccountNo'])-4); $str = html_entity_decode(http_build_query($data)); $data = file_get_contents('[login to view URL]'.$str); return parseFields($data); } function processACH() { global $config; $data = $_POST; $data['MerchantID'] = $config['MerchantID_ach']; $data['RegKey'] = $config['RegKey_ach']; $data['USER2'] = substr($data['AccountNo'],strlen($data['AccountNo'])-4); $str = html_entity_decode(http_build_query($data)); $data = file_get_contents('[login to view URL]'.$str); return parseFields($data); }