PHP Manual
Socket 函数
Sets blocking mode on a socket resource

socket_set_block

(PHP 4 >= 4.2.0, PHP 5, PHP 7)

socket_set_block — Sets blocking mode on a socket resource

说明

socket_set_block ( resource $socket ) : bool

The socket_set_block() function removes 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 blocking socket, the script will pause its execution until it receives a signal or it can perform the operation.

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_block() example

 <?php
$socket = socket_create_listen(1223);
socket_set_block($socket);

socket_accept($socket);
?>

This example creates a listening socket on all interfaces on port 1223 and sets the socket to O_BLOCK mode. socket_accept() will hang until there is a connection to accept.

参见

socket_set_nonblock() - Sets nonblocking mode for file descriptor fd
socket_set_option() - Sets socket options for the socket

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