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.
socket_set_block
(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
socket_set_block — Sets blocking mode on a socket
Descrizione
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.
Valori restituiti
Restituisce true in caso di successo, false in caso di fallimento.
Log delle modifiche
| Versione | Descrizione |
|---|---|
| 8.0.0 |
socket is a Socket instance now;
previously, it was a resource.
|
Esempi
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.
Vedere anche:
- socket_set_nonblock() - Attiva la modalità "nonblocking" per il descrittore di file fd
- socket_set_option() - Valorizza le opzioni per un socket
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User Contributed Notes 1 note
laacz at laacz dot lv ¶
9 years ago
