PHP程序与服务器端通讯方法小结

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假设有10个网站，分布在各地，它们的库存要同步，而数据库不支持远程连接。

　　我们要实时地取得服务器的库存数，可以通过很多种方法，我所知道的有以下几种：

　　　?CURL方式

　　　?SOCKET方式

　　　?PHP5中的SOAP方式

　　以下分别给出示例来实现它：

　　CURL方式

　　client.php

＜?php
$psecode = ’NDE005’;
$website = ’www.abc.com’;
$amt = 1;
$pwd = 123456;
$ch = curl_init();
$curl_url = "http://ics1.server.com/index.php?web=" . $website .  
"&pwd=" . $pwd . "&action=check&pseid=" . $psecode .  
"&amt=" . $amt;
curl_setopt($ch, CURLOPT_URL, $curl_url);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);//不直接输出，返回到变量
$curl_result = curl_exec($ch);
$result = explode(’,’, $curl_result);
curl_close($ch);
print_r($result);
?＞
　　服务器端只需按一定的格式输出，然后客户端按此格式接收就可以了如：

echo "OK," . $fpsecode . "," . $fbalance ;//以逗号分隔
　　SOCKET方式

　　这个要借助第三方类库HttpClient,可以到这里下载：http://scripts.incutio.com/httpclient/

＜?php
require_once ’class/HttpClient.php’;
$params = array(’web’ =＞ ’www.abc.com’,
’pwd’ =＞ ’123456’,
’action’ =＞ ’check’,
’pseid’ =＞ ’NDE005’,
’amt’ =＞ 1);
$pageContents = HttpClient::quickPost(’http://ics.server.com/index.php’, $params);
$result = explode(’,’, $pageContents);
print_r($result);
?＞
　　PHP5中的SOAP方式

　　server.php

＜?php  
function getQuote($fpsecode) {  
global $dbh;
$result = array();
try {
$query = "SELECT fprice, fcansale, fbalance, fbaltip FROM tblbalance where upper(trim(fpsecode)) = :psecode limit 1";
$stmt = $dbh-＞prepare($query);
$stmt-＞execute(array(’:psecode’ =＞ strtoupper(trim($fpsecode))));
$stmt-＞bindColumn(’fprice’, $fprice);
$stmt-＞bindColumn(’fcansale’, $fcansale);
$stmt-＞bindColumn(’fbalance’, $fbalance);
$stmt-＞bindColumn(’fbaltip’, $fbaltip);
while($row = $stmt-＞fetch(PDO_FETCH_BOUND)) {
//
}
} catch (PDOException $e) {
echo $e-＞getMessage();
}
return $fprice; //你可以返回一个数组
}  

$dsn = ’pgsql:host=192.168.*.* port=5432 dbname=db user=123456 password=123456’;
try {
$dbh = new PDO($dsn);
} catch (PDOException $e) {
die(’Connection failed: ’ . $e-＞getMessage());  
}
ini_set("soap.wsdl_cache_enabled", "0"); // disabling WSDL cache  
$server = new SoapServer("stockquote.wsdl"); //配置文件
$server-＞addFunction("getQuote");  
$server-＞handle();  
?＞
　　stockquote.wsdl

＜?xml version =’1.0’ encoding =’UTF-8’ ?＞  
＜definitions name=’StockQuote’  
targetNamespace=’http://example.org/StockQuote’  
xmlns:tns=’ http://example.org/StockQuote ’  
xmlns:soap=’http://schemas.xmlsoap.org/wsdl/soap/’  
xmlns:xsd=’http://www.w3.org/2001/XMLSchema’  
xmlns:soapenc=’http://schemas.xmlsoap.org/soap/encoding/’  
xmlns:wsdl=’http://schemas.xmlsoap.org/wsdl/’  
xmlns=’http://schemas.xmlsoap.org/wsdl/’＞  

＜message name=’getQuoteRequest’＞  
＜part name=’symbol’ type=’xsd:string’/＞  
＜/message＞  
＜message name=’getQuoteResponse’＞  
＜part name=’Result’ type=’xsd:float’/＞  
＜/message＞  

＜portType name=’StockQuotePortType’＞  
＜operation name=’getQuote’＞  
＜input message=’tns:getQuoteRequest’/＞  
＜output message=’tns:getQuoteResponse’/＞  
＜/operation＞  
＜/portType＞  

＜binding name=’StockQuoteBinding’ type=’tns:StockQuotePortType’＞  
＜soap:binding style=’rpc’  
transport=’http://schemas.xmlsoap.org/soap/http’/＞  
＜operation name=’getQuote’＞  
＜soap:operation soapAction=’urn:xmethods-delayed-quotes#getQuote’/＞  
＜input＞  
＜soap:body use=’encoded’ namespace=’urn:xmethods-delayed-quotes’  
encodingStyle=’http://schemas.xmlsoap.org/soap/encoding/’/＞  
＜/input＞  
＜output＞  
＜soap:body use=’encoded’ namespace=’urn:xmethods-delayed-quotes’  
encodingStyle=’http://schemas.xmlsoap.org/soap/encoding/’/＞  
＜/output＞  
＜/operation＞  
＜/binding＞  

＜service name=’StockQuoteService’＞  
＜port name=’StockQuotePort’ binding=’StockQuoteBinding’＞  
＜soap:address location=’http://192.168.3.9/php5/server.php’/＞  
＜/port＞  
＜/service＞  
＜/definitions＞

client.php

＜?php  
$client = new SoapClient("stockquote.wsdl");  
$result = $client-＞getQuote("nde005");  
print_r($result);
?＞