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PHP的socket连接到服务端模版，socket服务端

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Jun 13, 2016 am 09:25 AM

socket

PHP的socket连接到服务端模版，socket服务端

在整理新框架的时候，发现对于一些缓存数据，需要对外的接口访问，而比较方便的是php的接口，所以临时研究了下php如何连接java服务端。

先贴上代码：

php
require_once 'CRC16.php';
/*-----------------------------
 | 向服务器发送数据包
 ------------------------------*/
classServer{
//发送数据包
publicstaticfunction sendPacket($packet, $host, $port){
 $protocol ='tcp';
 $get_prot = getprotobyname ( $protocol );
//创建socket
 $socket = socket_create ( AF_INET, SOCK_STREAM, $get_prot );
//建立连接
 $conn = socket_connect ( $socket, $host, $port );
if(!$conn){
 socket_close($socket);
exit("socket connect failed!");
}
 $buffer =@socket_read($socket,9, PHP_NORMAL_READ);
 $crcCode =(ord($buffer[7])8)+ord($buffer[8]);
 $len = strlen($packet);
 $newpacket = CRC16::encode($packet, $crcCode,4);
 socket_send ( $socket, $newpacket, $len,0);
//等待接受
 $head =@socket_read($socket,4,PHP_NORMAL_READ);
$len =(ord($head[0])24)+(ord($head[1])16)+(ord($head[2])8)+ord($head[3]);
 $content =@socket_read($socket,$len-4,PHP_NORMAL_READ);
 socket_close ( $socket );
return substr($content,3);
}
publicstaticfunction packet($group,$cmd,$message){
 $size = strlen($message)+8;
 $str ='';
 $str .=self::writeInt($size);
 $str .=self::writeByte(0);
 $str .=self::writeByte($group);
 $str .=self::writeByte($cmd);
 $str .=self::writeByte(1);
 $str .= $message;
return $str;
}
//写进2个byte的数据
privatestaticfunction writeShort($s){
return pack ("n", $s );
}
//写进4个byte的数据
privatestaticfunction writeInt($N){
return pack ("N", $N );
}
//写进1个byte的数据
privatestaticfunction writeByte($b){
return pack ("c", $b );
}
}

因为个人服务端连接之后，会分配一个crcCode校验码，发送的消息需要进行crc16的加密（其实很简单的，保持点神秘感），所以先等待接受固定长度来获得crcCode，然后发送请求后，等待接受数据包，并返回。

来自为知笔记(Wiz)

PHP的Socket怎进行服务端与客户端的相互通信？

服务器提供数据缓冲区，并提供一种用户识别机制。以此来给聊天用户双方发送相应的信息。
看似用户与用户之间的通信实质上是用户在与服务器通信。
我的一点理解

php socket连接不上

查一下端口把

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