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看了几个的关于web架构方面的获奖作品,感受颇深,xml和php结合应用越来多了,里面几乎所有的作品在设计上都用到了xml这个东西…..-_-! 又落伍了不少. 建议朋友们都去看看. 所以自己这几天在疯狂的学习php和xml结合的相关知识.
这其中就遇到了xml-rpc服务, 在网上可以找到的资料不多, 而且大多数都是用了其他第三方用php开发的xml-rpc class, 而用php5自带的xmlrpc函数(目前是试验模块)的好像就不多了, 但是个人还是比较喜欢原生的东西,就自己研究了一下.
在手册中有人提供了一个例子,但是不支持中文, 并且没有告诉在客户端返回结果后怎么处理这个结果. 自己苦搞半天终于搞明白了,其实可以很轻松让他支持中文, 并且几乎不需要做任何额外的工作.
下面是他原来的例子(可以在手册中找到):
/* clienttest.php */
<?php
function do_call($host, $port, $request) {
$fp = fsockopen($host, $port, $errno, $errstr);
$query = “post /servertest.php http/1.0\nuser_agent: my egg client\nhost: “.$host.”\ncontent-type: text/xml\ncontent-length: “.strlen($request).”\n\n”.$request.”\n”;
if (!fputs($fp, $query, strlen($query))) {
$errstr = “write error”;
return 0;
}
$contents = ;
while (!feof($fp)) {
$contents .= fgets($fp);
}
fclose($fp);
return $contents;
}
$host = localhost;
$port = 80;
$request = xmlrpc_encode_request(cycle, egg);
$response = do_call($host, $port, $request);
/* do something with $response, e.g. print it */
?>
/* servertest.php */
<?php
function lifecycle($method, $params) {
/* $method = cycle, $params = (array of) request parameter(s); $data is also passed from xmlrpc_server_call_method, if we had any data to pass */
switch($params[0]) {
case egg:
$reply = all eggs will be birds one day.;
break;
default:
$reply = that must have been an otheregg;
}
return $reply;
}
$server = xmlrpc_server_create();
/* register the external name and then the internal name */
xmlrpc_server_register_method($server, “cycle”, “lifecycle”);
$request = $http_raw_post_data; // no you dont need always on, and no $_post doesnt work.
/* the parameters here are server, xml-string and user data. theres supposed to be an optional output options array too, but i cant get it working 🙁 hence header() call */
$response = xmlrpc_server_call_method($server, $request, null);
header(content-type: text/xml);
print $response;
xmlrpc_server_destroy($server);
?>
这个例子中客户端得到$response后没有作任何的处理,这个返回值是这个样子的字符串:
http/1.1 200 ok
date: thu, 04 nov 2004 08:21:43 gmt
server: apache/2.0.47 (win32) php/5.0.1
x-powered-by: php/5.0.1
connection: close
content-type: text/xml;charset=gb2312
<?xml version=”1.0″ encoding=”iso-8859-1″?>
<methodresponse>
<params>
<param>
<value>
<string>all eggs will be birds one day.</string>
</value>
</param>
</params>
</methodresponse>
这个字符串包含了两个部分,一个是html的头信息,一个是xml-rpc包文件,对他稍微进行一下处理就可以满足我们的要求了.
下面看看我修改过的例子,主要用了一个xmlrpc_decode函数,网上没有找到说明,自己试了半天,才试出来他的用法:
/* clienttest.php */
<?php
function do_call($host, $port, $request) {
$fp = fsockopen($host, $port, $errno, $errstr);
$query = “post /servertest.php http/1.0\nuser_agent: my egg client\nhost: “.$host.”\ncontent-type: text/xml\ncontent-length: “.strlen($request).”\n\n”.$request.”\n”;
if (!fputs($fp, $query, strlen($query))) {
$errstr = “write error”;
return 0;
}
$contents = ;
while (!feof($fp)) {
$contents .= fgets($fp);
}
fclose($fp);
return $contents;
}
$host = localhost;
$port = 80;
$request = xmlrpc_encode_request(cycle, egg);
$response = do_call($host, $port, $request);
/* do something with $response, e.g. print it */
$pos = strpos($response, <?xml);
$str = substr($response, $pos);
$tmp = xmlrpc_decode($str);
print_r($tmp);
/* do something with $tmp e.g. print it */
?>
/* servertest.php */
<?php
function lifecycle($method, $params) {
/* $method = cycle, $params = (array of) request parameter(s); $data is also passed from xmlrpc_server_call_method, if we had any data to pass */
switch($params[0]) {
case egg:
$reply[] = all eggs will be birds one day.我市好人;
$reply[] = all eggs will be birds one day.我市好人aaaaa;
break;
default:
$reply[] = that must have been an otheregg我市好人;
}
return $reply;
}
$server = xmlrpc_server_create();
/* register the external name and then the internal name */
xmlrpc_server_register_method($server, “cycle”, “lifecycle”);
$request = $http_raw_post_data; // no you dont need always on, and no $_post doesnt work.
/* the parameters here are server, xml-string and user data. theres supposed to be an optional output options array too, but i cant get it working 🙁 hence header() call */
$response = xmlrpc_server_call_method($server, $request, null);
header(content-type: text/xml);
print ($response);
xmlrpc_server_destroy($server);
?>
运行一下,看看显示的数组的样式,这样处理起来就舒服多了.
明白了这个,别闲着,看看php5自带的”soap functions”,使用方法和工作原理,大同小异啊.
