stream_socket_shutdown()

(PHP 5 >= 5.2.1, PHP 7)

Shutdown a full-duplex connection

说明

stream_socket_shutdown(resource $stream,int $how): bool

Shutdowns (partially or not) a full-duplex connection.

Note:
The associated buffer, or buffers, may or may not be emptied.

参数

$stream: An open stream (opened withstream_socket_client(), for example)
$how: One of the following constants:STREAM_SHUT_RD(disable further receptions),STREAM_SHUT_WR(disable further transmissions)orSTREAM_SHUT_RDWR(disable further receptions and transmissions).

返回值

成功时返回TRUE，或者在失败时返回FALSE。

范例

Astream_socket_shutdown()example

<?php
$server = stream_socket_server('tcp://127.0.0.1:1337');
$client = stream_socket_client('tcp://127.0.0.1:1337');
var_dump(fputs($client, "hello"));
stream_socket_shutdown($client, STREAM_SHUT_WR);
var_dump(fputs($client, "hello")); // doesn't work now
?>

以上例程的输出类似于：

int(5)
Notice: fputs(): send of 5 bytes failed with errno=32 Broken pipe in test.php on line 9
int(0)

参见

fclose() 关闭一个已打开的文件指针

Just a note to say that if you encounter problem closing some sockets using fclose in a multi client server, you should really give this one a try.
Spent a full day trying to resolve this issue using stream_socket_shutdown($clientStream,STREAM_SHUT_RDWR);
finally do the trick.