注意　
1.在socket_bind的时候ip地址不能真回环地址如127.0.0.1
2.server.php后台跑起来的时候　nohup php server.php > /var/tmp/a.log 2>&1 &
一： udp 方式
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 $buf; usleep( 1000 );}?>
2) client.php
php$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);?>
一： tcp 方式
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)?>
2) client.php
php$socket = socket_create(af_inet, sock_stream, sol_tcp);$con=socket_connect($socket,'192.168.2.143',11109);if(!$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);?>