php socket编程

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必备知识

pcntl库    pcntl_fork()创建一个子进程，创建成功返回子进程的pid号， 创建失败返回-1

socket系列函数socket_create();    创建socketsocket_bind();      为socket绑定ip和端口socket_listen();    监听socketsocket_connect();   开启一个socket连接socket_read();      读取数据socket_write();     写入数据socket_accept();

service.php

<?phpset_time_limit(0);// 通用变量$ip = "127.0.0.1";$port = 3378;$maxLength = 8192;// sockets$sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);$res = socket_bind($sock, $ip, $port);$res = socket_listen($sock, 10);// $msgsock = socket_accept($sock);$pid = 0;while(1) {    $msgsock = socket_accept($sock);    $pid = pcntl_fork();    if($pid == -1) {        die("could not fork");    } else if($pid) {        // 父进程    } else {        // 子进程        while(1) {            $buf = socket_read($msgsock, $maxLength);            $buf = strtoupper($buf);            socket_write($msgsock, $buf, strlen($buf));        }    }}socket_close($sock);

clinet.php

<?phpset_time_limit(0);$ip = "127.0.0.1";$port = 3378;$maxLength = 8192;$sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);socket_connect($sock, $ip, $port);while(1) {   //  socket_connect($sock, $ip, $port);    fwrite(STDOUT, "请输入传递的数据:");    $res = fgets(STDIN);    socket_write($sock, $res, strlen($res));    $rea = socket_read($sock, $maxLength);    echo $rea;}socket_close($sock);

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