学习PHPJsonRpc的最佳实践

使用这个作为入门例子.
https://www.metaname.co.nz/api

使用这个 php-json-rpc[bitbucket.org/jbg/php-json-rpc] 作为客户端库,超级简单,一看就会
<code>
class JsonRpcFault extends Exception {}

class JsonRpcClient {
    private $uri;

    public function __construct($uri) {
        $this->uri = $uri;
    }

    private function generateId() {
        $chars = array_merge(range('A', 'Z'), range('a', 'z'), range(0, 9));
        $id = '';
        for($c = 0; $c < 16; ++$c)
            $id .= $chars[mt_rand(0, count($chars) - 1)];
        return $id;
    }

    public function __call($name, $arguments) {
        $id = $this->generateId();

        $request = array(
            'jsonrpc' => '2.0',
            'method'  => $name,
            'params'  => $arguments,
            'id'      => $id
        );

        $jsonRequest = json_encode($request);

        $ctx = stream_context_create(array(
            'http' => array(
                'method'  => 'POST',
                'header'  => 'Content-Type: application/json\r\n',
                'content' => $jsonRequest
            )
        ));
        $jsonResponse = file_get_contents($this->uri, false, $ctx);

        if ($jsonResponse === false)
            throw new JsonRpcFault('file_get_contents failed', -32603);

        $response = json_decode($jsonResponse);
        if ($response === null)
            throw new JsonRpcFault('JSON cannot be decoded', -32603);

        if ($response->id != $id)
            throw new JsonRpcFault('Mismatched JSON-RPC IDs', -32603);

        if (property_exists($response, 'error'))
            throw new JsonRpcFault($response->error->message, $response->error->code);
        else if (property_exists($response, 'result'))
            return $response->result;
        else
            throw new JsonRpcFault('Invalid JSON-RPC response', -32603);
    }
}
</code>

再看看代码:
<code>
include('JsonRpcClient.php');
$api = new JsonRpcClient('https://www.metaname.co.nz/api');
print $api->account_balance('account-ref', 'api-key');
</code>

 

 

再看看API文档

 

http://code.google.com/p/secache/

php编写的文件型缓存解决方案

    * 纯php实现, 无须任何扩展，支持php4 / 5
    * 使用lru算法自动清理过期内容
    * 可以安全用于多进程并发
    * 最大支持1G缓存文件
    * 使用hash定位，读取迅速

用法样例

require('../secache/secache.php');
$cache = new secache;
$cache->workat('cachedata');

$key = md5('test'); //必须自己做hash，前4位是16进制0-f,最长32位。
$value = '值数据'; //必须是字符串

$cache->store($key,$value);

if($cache->fetch($key,$return)){
    echo '<li>'.$key.'=>'.$return.'</li>';
}else{
    echo '<li>Data get failed! <b>'.$key.'</b></li>';
}

点此下载
基于性能考虑,几点约束

    * 键需要自己做hash处理,最长32位.
    * 值必须是字符串。如果要存对象，请自己serialize

应用的项目

    * shopex购物系统

OpenID = {
	
	initialize: function(checkoutURI){
		this.checkoutURI = checkoutURI ;
	},
	
	// 校验登录
	checkout: function(name,passwd,token){
		//jQuery.getJSON(this.checkoutURI, function(data){console.log(data);});
		jQuery.get(this.checkoutURI,{user:name,callback: '?'}, function(data){console.log(data);});
		
		$.ajax({
			url: this.checkoutURI ,
			dataType: 'jsonp' ,
			type: 'POST' ,
			success: function(data){
				console.log(data);
			}
		});

	}
} ;

OpenID.initialize("http://localhost/jsonp.php");

<?php

// setcookie("ds123", "sdsds", time()+3600, "/");

$jsonp = array(
	array('user'=>'jack','roles'=>'admin,developer'),
	array('user'=>'wei','roles'=>'developer'),
	array('user'=>'grace','roles'=>'admin'),
);

$jsondata = json_encode($jsonp);

echo $_GET['callback'].'('.$jsondata.')';