PHP: Hypertext Preprocessor (original) (raw)
socket_set_block
(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
socket_set_block — Sets blocking mode on a socket
Description
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.
Return Values
Returns [true](reserved.constants.php#constant.true) on success or [false](reserved.constants.php#constant.false) on failure.
Changelog
| Version | Description |
|---|---|
| 8.0.0 | socket is a Socket instance now; previously, it was a resource. |
Examples
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.
See Also
- socket_set_nonblock() - Sets nonblocking mode for file descriptor fd
- socket_set_option() - Sets socket options for the socket
Found A Problem?
10 years ago
`Besides true and false socket_set_block might return NULL if you're not too careful. That would happen when passing non socket resource as first parameter.
E.g. socket_set_block(false)) would return NULL and emit warning that you're trying to do things with non-socket.
`