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socket_set_nonblock

socket_set_nonblock

(PHP 4 >= 4.1.0, PHP 5)

socket_set_nonblockSets nonblocking mode for file descriptor fd

说明

bool socket_set_nonblock ( resource $socket )

The socket_set_nonblock() function sets the O_NONBLOCK flag on the socket specified by the socket parameter.

When an operation (e.g. receive, send, connect, accept, ...) is performed on a non-blocking socket, the script will not pause its execution until it receives a signal or it can perform the operation. Rather, if the operation would result in a block, the called function will fail.

参数

socket

A valid socket resource created with socket_create() or socket_accept().

返回值

成功时返回 TRUE, 或者在失败时返回 FALSE.

范例

Example #1 socket_set_nonblock() example

<?php
$socket 
socket_create_listen(1223);
socket_set_nonblock($socket);

socket_accept($socket);
?>

This example creates a listening socket on all interfaces on port 1223 and sets the socket to O_NONBLOCK mode. socket_accept() will immediately fail unless there is a pending connection exactly at this moment.

参见


  • socket_accept
  • socket_bind
  • socket_clear_error
  • socket_close
  • socket_connect
  • socket_create
  • socket_create_listen
  • socket_create_pair
  • socket_getpeername
  • socket_getsockname
  • socket_get_option
  • socket_last_error
  • socket_listen
  • socket_read
  • socket_recv
  • socket_recvfrom
  • socket_select
  • socket_send
  • socket_sendto
  • socket_set_block
  • socket_set_nonblock
  • socket_set_option
  • socket_shutdown
  • socket_strerror
  • socket_write
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