Brief summary of communication methods between PHP program and server side

Program | The server assumes that there are 10 sites, distributed around them, that their inventory is synchronized, and that the database does not support remote connections.





we have to get the number of servers in real time, there are many ways to do it, I know the following:





· Curl Way





· Socket Mode





· The soap way in PHP5





to show the following example to achieve it:





Curl Way





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);
?＞


server-side only need to output in a certain format, and then the client will receive in this format, such as:





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


Socket Way





this to rely on Third-party class library httpclient, you can download here: 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 soap in the way





server.php





Function GetQuote ($fpsecode) {
Global $dbh;
$result = Array ();
try {
$query = "Select Fprice, Fcansale, Fbalance, Fbaltip from Tblbalance where Upper (Trim (fpsecode)) =:p Secode L Imit 1 ";
$stmt = $dbh->prepare ($query);
$stmt->execute Array (':p secode ' => strtoupper (Trim ($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 ();
The
return $fprice;//You can back an array
}

$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 "); Configuration file
$server->addFunction ("GetQuote");
$server->handle ();
? >


stockquote.wsdl






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/' >
















transport= ' http://schemas.xmlsoap.org/soap/http '/>



encodingstyle= ' http:// schemas.xmlsoap.org/soap/encoding/'/>


encodingstyle= ' http://schemas.xmlsoap.org/soap/encoding/'/>

operation>









client.php

$client = new SoapClient ("stockquote.wsdl");
$result = $client->getquote ("nde005");
Print_r ($result);
? >