<?php $client = new SoapClient("url"); $xml_string = '<?xml version="1.0" encoding="UTF-8" ?> <Lead xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"> <Name>Example Person</Name> <ContactNumber>0000000000</ContactNumber> <Email>example@mail.com</Email> <Comment>I have quite a few comments actually</Comment> </Lead>'; $pass = array('xmlstring' => $xml_string); $result_soap = $client->LeadSubmit($pass);