php socket的一个问题

[huitian1621]

<?php 

//客户端
header("Content-type:text/html;Charset=gb2312");

$DBserver         = "localhost";
$DBname           = "new";
$DBuser           = "root";
$DBpassword       = "";

$con = mysql_connect("localhost","root","");

mysql_select_db("new");

class Socket{
	private $host;
	private $port;
	private $error=array();
	private $socket=null;
	private $queryStr="";
	public function construct($host,$port){
		if(!extension_loaded("sockets")){
			exit("extension=php_sockets.dll");
		}
		if (empty($host))exit("157.55.17.201");
		if(empty($port))exit("5432");
		$this->host=$host;
		$this->port=$port;
		$this->CreateSocket();
	}
	
	private function CreateSocket(){
		!$this->socket&&$this->socket=socket_create(AF_INET,SOCK_STREAM,SOL_TCP);
		$r=@socket_connect($this->socket,$this->host,$this->port);
		if($r){
			return $r;
		}else {
			$this->error[] = socket_last_error($this->socket);
			return  false;
		}
	}	
	
	//向socket服务器写入数据并读取
	public function eachMsg($contents){
		
		$this->queryStr="select old_id from pagecontents where old_id = 1 ";
		
		$this->queryStr=$contents;
		!$this->socket&&$this->CreateSocket();
		$contents=$this->fliterSendData($contents);
		$result = socket_write($this->socket,$contents,strlen($contents));    //51行！！！！！！
		if(!intval($result)){
			$this->error[] = socket_last_error($this->socket);
			return;
		}
		return $response;
	}
	
	//过滤数据
	private function fliterSendData($contents){
		//对写入数据进行处理
		return $contents;
	}
	
	public function getError(){
		return $this->error;
	}
	
	//最后一次错误信息
	public function getLastError(){
		return $this->error(count($this->error));
	}
	
	//获取最后一次发送的信息
	public function  getLastMsg(){
		return $this->queryStr;
	}
	
	public function getHost(){
		return $this->host;
	}
	
	public function getPort(){
		return $this->port;
	}
	
	private function close(){
		$this->socket&&socket_close($this->socket);
		$this->socket=null;
	}
	
	public function destruct(){
		$this->close();
	}
}
$SC=new Socket('127.0.0.1',1001);
//发送信息并接收服务器返回的数据
$REP = $SC->eachMsg('Hellow');  
var_dump($REP);
?>

Warning: socket_write() [function.socket-write]: unable to write to socket [0]: 由于套接字没有连接并且(当使用一个 sendto 调用发送数据报套接字时)没有提供地址，发送或接收数据的请求没有被接受。 in C:\PHPnow\htdocs\3.31017.php on line 51
NULL

<?php
if (extension_loaded('socket')) { 
echo '支持socket'; 
}else{ 
echo '不支持socket'; 
} 
?>

不支持socket

支持sockets

[coder]

server是一直运行的
server.php

<?php
//确保在连接客户端时不会超时
set_time_limit(0);
//设置IP和端口号
$address = '127.0.0.1';
$port = '1234';
//创建一个SOCKET
if (($sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)) < 0) {
    echo "socket_create() 失败的原因是:" . socket_strerror($sock) . "<br>";
}
//绑定到socket端口
if (($ret = socket_bind($sock, $address, $port)) < 0) {
    echo "socket_bind() 失败的原因是:" . socket_strerror($ret) . "<br>";
}
//开始监听
if (($ret = socket_listen($sock, 4)) < 0) {
    echo "socket_listen() 失败的原因是:" . socket_strerror($ret) . "<br>";
}
echo "正在端口: $post 监听\r\n";
while (($msgsock = socket_accept($sock)) > 0) {
    //发到客户端
    $msg = "<font color=red>服务器端发送:欢迎进入服务器！</font><br>";
    socket_write($msgsock, $msg, strlen($msg));
    $buf = socket_read($msgsock, 8192);
    if ($buf != '')
        echo "客户端" . $_SERVER['REMOTE_ADDR'] . "登陆\r\n:传送信息:$buf\r\n";
    socket_close($msgsock);
}
socket_close($sock);
?> 


client.php

<?php
error_reporting(0);
set_time_limit(0);
echo "<h2>TCP/IP Connection</h2>\n";
$service_port = 1234;
$address = "127.0.0.1";
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if ($socket < 0) {
    echo "socket_create() failed: reason: " . socket_strerror($socket) . "\n";
} else {
    echo "OK.\n";
}
echo "Port:$service_port<br>";
$result = socket_connect($socket, $address, $service_port);
if ($result < 0) {
    echo "socket_connect() failed.\nReason: ($result) " .
     socket_strerror($result) . "\n";
} else {
    echo "Load OK!<br>";
}
$in = "Hello\r\n";
$out = '';
$out1 = '';
if (! socket_write($socket, $in, strlen($in))) {
    echo "socket_write() failed: reason: " . socket_strerror($socket) . "\n";
} else {
    echo "Sucess<br>";
}
while ($out = socket_read($socket, 8192)) {
    echo "Server say:<br>";
    echo $out;
}
socket_close($socket);
?> 

[amani11]

开启服务端，监听对应的端口