stream_socket_accept

(PHP 5, PHP 7, PHP 8)

stream_socket_accept — 接受由 stream_socket_server() 创建的套接字连接

说明

stream_socket_accept(resource $socket, ?float $timeout = null, string &$peer_name = null): resource|false

接受由 stream_socket_server() 创建的套接字连接。

参数

socket: 需要接受的服务器创建的套接字连接。
timeout: 覆盖默认的套接字接受的超时时限。输入的时间需以秒为单位。默认情况下，使用 default_socket_timeout 作为超时时限。
peer_name: 如果已选的传输器存在且有效的已连接客户端，则将该值设置为已连接客户端名称（地址）。

注意:
也可以之后通过 stream_socket_get_name() 来确定。

返回值

返回接受套接之后的资源流或者在失败时返回 false。

更新日志

版本	说明
8.0.0	现在 `timeout` 可以为 null。

注释

警告

该函数不能被用于 UDP 套接字。可以使用 stream_socket_recvfrom() 和 stream_socket_sendto() 来取而代之。

参见

stream_socket_server() - 创建 Internet 或 Unix 域服务器套接字
stream_socket_get_name() - 获取本地或者远程的套接字名称
stream_set_blocking() - 为资源流设置阻塞或者阻塞模式
stream_set_timeout() - Set timeout period on a stream
fgets() - 从文件指针中读取一行
fgetss() - 从文件指针中读取一行并过滤掉 HTML 标记
fwrite() - 写入文件（可安全用于二进制文件）
fclose() - 关闭一个已打开的文件指针
feof() - 测试文件指针是否到了文件结束的位置
cURL 函数

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用户贡献的备注 2 notes

down

leleu256NOSPAM at hotmail dot com ¶

20 years ago

This code could be very helpfull...

The following code is for the "server". It listen for a message until CTRL-C

<?php
while (true)
{
// disconnected every 5 seconds...
receive_message('127.0.0.1','85',5);
}

function receive_message($ipServer,$portNumber,$nbSecondsIdle)
{
  // creating the socket...
  $socket = stream_socket_server('tcp://'.$ipServer.':'.$portNumber, $errno, $errstr);
  if (!$socket)
  {
    echo "$errstr ($errno)<br />\n";
  }
  else
   {
    // while there is connection, i'll receive it... if I didn't receive a message within $nbSecondsIdle seconds, the following function will stop.
    while ($conn = @stream_socket_accept($socket,$nbSecondsIdle))
    {
     $message= fread($conn, 1024);
     echo 'I have received that : '.$message;
     fputs ($conn, "OK\n");
     fclose ($conn);
    }
    fclose($socket);
  }
}
?>

The following code is for the "client". It send a message, and read the respons...

<?php

send_message('127.0.0.1','85','Message to send...');

function send_message($ipServer,$portServer,$message)
{
  $fp = stream_socket_client("tcp://$ipServer:$portServer", $errno, $errstr);
  if (!$fp)
  {
     echo "ERREUR : $errno - $errstr<br />\n";
  }
  else
  {
     fwrite($fp,"$message\n");
     $response =  fread($fp, 4);
     if ($response != "OK\n")
        {echo 'The command couldn\'t be executed...\ncause :'.$response;}
     else
        {echo 'Execution successfull...';}
     fclose($fp);
  }
}
?>

down

Andy at txtNation dot com ¶

13 years ago

To check if there's a new connection waiting, without blocking, or (when using non-blocking mode) without notices), you can use stream_accept (as opposed to socket_select).

<?php

    class GenericClass {

        protected $resSocket=null;

        function acceptConnections() {

            # check that we still have a resource 
            
            if(is_resource($this->resSocket)) {
            
                $arrRead=array($this->resSocket);
                
                $arrWrite=array();
                
                /** @warning Passing $arrRead,$arrWrite by reference */
                if(stream_select($arrRead,$arrWrite,$arrWrite,0)) {
            
                    $resConnection=stream_socket_accept($this->resSocket,0);

                    # ... other stuff here
                }
            }
        }
    }
?>