细说socket

socket_accept()接受一个Socket连接
socket_bind()把socket绑定在一个IP地址和端口上
socket_clear_error()清除socket的错误或者最后的错误代码
socket_close()关闭一个socket资源
socket_connect()开始一个socket连接
socket_create_listen()在指定端口打开一个socket监听
socket_create_pair()产生一对没有区别的socket到一个数组里
socket_create()产生一个socket，相当于产生一个socket的数据结构
socket_get_option()获取socket选项
socket_getpeername()获取远程类似主机的ip地址
socket_getsockname()获取本地socket的ip地址
socket_iovec_add()添加一个新的向量到一个分散/聚合的数组
socket_iovec_alloc()这个函数创建一个能够发送接收读写的iovec数据结构
socket_iovec_delete()删除一个已经分配的iovec
socket_iovec_fetch()返回指定的iovec资源的数据
socket_iovec_free()释放一个iovec资源
socket_iovec_set()设置iovec的数据新值
socket_last_error()获取当前socket的最后错误代码
socket_listen()监听由指定socket的所有连接
socket_read()读取指定长度的数据
socket_readv()读取从分散/聚合数组过来的数据
socket_recv()从socket里结束数据到缓存
socket_recvfrom()接受数据从指定的socket，如果没有指定则默认当前socket
socket_recvmsg()从iovec里接受消息
socket_select()多路选择
socket_send()这个函数发送数据到已连接的socket
socket_sendmsg()发送消息到socket
socket_sendto()发送消息到指定地址的socket
socket_set_block()在socket里设置为块模式
socket_set_nonblock() socket里设置为非块模式
socket_set_option()设置socket选项
socket_shutdown()这个函数允许你关闭读、写、或者指定的socket
socket_strerror()返回指定错误号的详细错误
socket_write()写数据到socket缓存
socket_writev()写数据到分散/聚合数组

<?php
//socket 服务器端
/*
+-------------------------------
* @创建socket server整个过程
+-------------------------------
* @socket_create
* @socket_bind
* @socket_listen
* @socket_accept
* @socket_read
* @socket_write
* @socket_close
+--------------------------------
*/
//设置不超时并打印所以错误
error_reporting(0);
set_time_limit(0);
//检测php是否支持socket
if(!extension_loaded('sockets')){
die('The sockets extension is not loaded.');
//需要打开扩展：extension=php_sockets.dll
}
//server的地址和端口
$address ="127.0.0.1";
$port ="10000";
//创建socket链接
$mysock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP)ordie("Could not create socket\n");
//绑定地址和端口号
socket_bind($mysock, $address, $port)ordie("Could not bind tosocket\n");
//监听
socket_listen($mysock,5)ordie("Could not set up socket listener\n");;
echo "Server started, accepting connections...\n";
//Socket来处理通信。这里会阻塞等待
$client = socket_accept($mysock)ordie("Could not accept incomingconnection\n");
//发到客户端
$msg ="congratulations! you success!\n";
socket_write($client, $msg, strlen($msg));
echo "send to client: $msg\n";
//接收客户端的消息
$buf = socket_read($client,8192);
echo "recvice from client: $buf\n";
//关闭
echo "Closing sockets...";
socket_close($client);
socket_close($mysock);

<?php
//socket 客户端
/*
+-------------------------------
* @client链接socket过程
+-------------------------------
* @socket_create
* @socket_connect
* @socket_write
* @socket_read
* @socket_close
+--------------------------------
*/
//设置不超时并打印所以错误
error_reporting(0);
set_time_limit(0);
//地址和端口号
$address ="127.0.0.1";
$port =10000;
//创建socket链接
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if($socket ===false){
echo "socket_create() failed: reason: ". socket_strerror(socket_last_error())."\n";
die;
}else{
echo "socket successfully created.\n";
}
//连接到地址和端口号
echo "Attempting to connect to '$address' on port '$port'...\n";
$result = socket_connect($socket, $address, $port);
if($result ===false){
echo "socket_connect() failed.\nReason: ($result) ". socket_strerror(socket_last_error($socket))."\n";
die;
}else{
echo "successfully connected to $address.\n";
}
//发给 server
$msg ="hello,I'm client\n";
socket_write($socket, $msg, strlen($msg));
echo "send to server: $msg\n";
//接收 server的消息
$buf = socket_read($socket,8192);
echo "recvice from server: $buf\n";
echo "Closing socket...";
socket_close($socket);

D:\wamp\www\testphp\socket>php server.php
server started, accepting connections...

D:\wamp\www\testphp\socket>php client.php
socket successfully created.
Attempting to connect to '127.0.0.1' on port '10000'...
successfully connected to 127.0.0.1.
send to server: hello,I'm client
recvice from server: congratulations! you success!
Closing socket...

D:\wamp\www\testphp\socket>php server.php
Server started, accepting connections...
send to client: congratulations! you success!
recvice from client: hello,I'm client
Closing sockets...
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