用PHP实现Soap通讯

近日用PHP实现Soap通讯，写了一些简单的方法：
<?
 php
 function HttpSoap($server, $port, $url, $namespace, $action, $data) {
 $fp = @fsockopen($server, $port);
 if (!$fp) {
 return FALSE;
 } else {
 $soapData = ConstructData($namespace, $action, $data);
 $length = strlen($soapData);$out = "POST $url HTTP/1.1\r\n";
 $out .= "Host: $server\r\n";
 $out .= "Content-Type: text/xml; charset=utf-8\r\n";
 $out .= "Content-Length: $length\r\n";
 $out .= "SOAPAction: \"$namespace$action\"\r\n\r\n";
 $out .= $soapData;
 $out .= "\r\n\r\n";fputs($fp, $out);
 stream_set_timeout($fp, 2);$header = "";
 while($line = trim(fgets($fp))) {
 $header .= $line."\n";
 }
 $dataPos = strpos($header, "Content-Length: ") + 16;
 $dataEnd = strpos($header, "\n", $dataPos);
 $dataLength = substr($header, $dataPos, $dataEnd - $dataPos);
 $data = "";
 if($dataLength > 0) {
 $data = fread($fp, $dataLength);
 }
 fclose($fp);
 if(strlen($data) != $dataLength || $dataLength <= 0) {
 return FALSE;
 }
 return $data;
 }
 }function ConstructData($namespace, $action, $data) {
 $soapData = "
 <?xml version="1.0\" encoding=\"utf-8\"?>\r\n";
 $soapData .= "<soap:Envelope xmlns:xsi=\http://www.w3.org/2001/XMLSchema-instance\ xmlns:xsd=\"​​​http://www.w3.org/2001/XMLSchema\​​​" xmlns:soap=\"\r\n'>http://schemas.xmlsoap.org/soap/envelope/\">\r\n";
 $soapData .= " <soap:Body>\r\n";
 $soapData .= " <$action xmlns=\"$namespace\">\r\n";
 foreach($data as $name => $value) {
 $name = iconv("GBK","UTF-8",$name);
 $value= iconv("GBK","UTF-8",$value);
 $soapData .= " <$name>$value</$name>\r\n";
 }
 $soapData .= " </$action>\r\n";
 $soapData .= " </soap:Body>\r\n";
 $soapData .= "</soap:Envelope>";return $soapData;
 }<?
 $data=array(
 'user'=>'测试', //如果需要输入二进制数据请采用BASE64编码
 'pass'=>'test'
 ); 
 echo HttpSoap('sample.anyhost.com', 80, '/sampleSoap.asmx', 'http://tempuri.org/', 'logIn', $data);
 ?>