Pay attention to

1. IP addresses cannot be true loopback addresses such as 127.0.0.1 during socket_bind

2. PHP > /var/tmp/a.log2 > &1&nohup PHP server. PHP > /var/tmp/a.log2 > &1&

1: UDP mode

1) server.php

     

      
<? php
      
//error_reporting( E_ALL );
      
set_time_limit( 0 );
      
ob_implicit_flush();
      
$socket = socket_create( AF_INET, SOCK_DGRAM, SOL_UDP );
      
if ( $socket === false ) {
      
  echo "socket_create() failed:reason:" . socket_strerror( socket_last_error() ) . "\n";
      
}
      
$ok = socket_bind($socket, '202.85.218.133', 11109);
      
if ( $ok === false ) {
      
  echo "socket_bind() failed:reason:" . socket_strerror( socket_last_error( $socket ) );
      
}
      
while ( true ) {
      
  $from = "";
      
  $port = 0;
      
  socket_recvfrom( $socket, $buf,1024, 0, $from, $port );
      
  echo $buf;
      
  usleep( 1000 );
      
}
      
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2) client.php

     

      
<? php
      
$sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
      
$msg = 'hello';
      
$len = strlen($msg);
      
Socket_sendto ($sock, $MSG, $len, 0, '202.85.218.133', 11109);
      
socket_close($sock);
      
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Two: TCP

1)server.php

     

      
<? php
      
//error_reporting( E_ALL );
      
set_time_limit( 0 );
      
ob_implicit_flush();
      
$socket = socket_create( AF_INET, SOCK_STREAM, SOL_TCP );
      
Socket_bind ($socket, '192.168.2.143', 11109);
      
socket_listen($socket);
      
$acpt=socket_accept($socket);
      
echo "Acpt! \n";
      
while ( $acpt ) {
      
  $words=fgets(STDIN);
      
  socket_write($acpt,$words);
      
  $hear=socket_read($acpt,1024);
      
  echo $hear;
      
  if("bye\r\n"==$hear){
      
    socket_shutdown($acpt);
      
    break;
      
  }
      
  usleep( 1000 );
      
}
      
socket_close($socket)
      
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2) client.php

     

      
<? php
      
$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
      
$con = socket_connect ($sockets, '192.168.2.143, 11109);
      
if(! $con){socket_close($socket); exit; }
      
echo "Link\n";
      
while($con){
      
    $hear=socket_read($socket,1024);
      
    echo $hear;
      
    $words=fgets(STDIN);
      
    socket_write($socket,$words);
      
if($words=="bye\r\n"){break; }
      
}
      
socket_shutdown($socket);
      
socket_close($sock);
      
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