PHP程序与服务器端通讯方法小结

　　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 = "<A href="http://ics1.server.com/index.php?web">http://ics1.server.com/index.php?web</A>=" . $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 . "," . $fbalance ;//以逗号分隔
　　SOCKET方式
　　这个要借助第三方类库HttpClient,可以到这里下载：<A href="http://scripts.incutio.com/httpclient/">http://scripts.incutio.com/httpclient/</A>
＜?phprequire_once ’class/HttpClient.php’;$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=’ <A href="http://example.org/StockQuote">http://example.org/StockQuote</A> ’ 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);?＞