如何在PHP项目中实现一个Soap通讯功能

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<?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);
?>

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