(PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8)
socket_create_listen — Opens a socket on port to accept connections
socket_create_listen(int $port, int $backlog = SOMAXCONN): Socket|false
socket_create_listen() creates a new Socket instance of type AF_INET listening on all local interfaces on the given port waiting for new connections.
This function is meant to ease the task of creating a new socket which only listens to accept new connections.
portThe port on which to listen on all interfaces.
backlog The backlog parameter defines the maximum length the queue of pending connections may grow to. SOMAXCONN may be passed as backlog parameter, see socket_listen() for more information.
socket_create_listen() returns a new Socket instance on success or false on error. The error code can be retrieved with socket_last_error(). This code may be passed to socket_strerror() to get a textual explanation of the error.
| Version | Description |
|---|---|
| 8.4.0 | The default value of is now SOMAXCONN. Previously it was 128. |
| 8.0.0 | On success, this function returns a Socket instance now; previously, a resource was returned. |
Note:
If you want to create a socket which only listens on a certain interface you need to use socket_create(), socket_bind() and socket_listen().
© 1997–2025 The PHP Documentation Group
Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.socket-create-listen.php