socket_create_listen

Function • Params changed in PHP 8.4

Opens a socket on port to accept connections.

PHP 5
PHP 7
PHP 8.0
Improved
PHP 8.1
PHP 8.2-8.3
PHP 8.4
Improved
PHP 8.5
PHP 8.6

socket_create_listen Function synopsis

socket_create_listen(int $port, int $backlog = SOMAXCONN): Socket|false

Parameters

$port

Typeint

The port on which to listen on all interfaces.

$backlog

OptionalTypeintDefault valueSOMAXCONN

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.

Return value

TypeSocket|false

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.

Changes to the socket_create_listen Function

PHP 8.4

  • Parameter default value changed for position #2 ($backlog): 128 to SOMAXCONN
- socket_create_listen(int $port, int $backlog = 128): Socket|false
+ socket_create_listen(int $port, int $backlog = SOMAXCONN): Socket|false

PHP 8.0

  • Return type added: Socket|false
  • Parameter type added for parameter #1 ($port): int
  • Parameter type added for parameter #2 ($backlog): int
  • Parameter default value added for position #2 ($backlog): 128
- socket_create_listen($port, $backlog)
+ socket_create_listen(int $port, int $backlog = 128): Socket|false

socket_create_listen Function Availability

PHP VersionAvailability
PHP 8.6Upcoming Release Yes
PHP 8.5Supported (Latest) Yes
PHP 8.4Supported Yes
PHP 8.3Security-Fixes Only Yes
PHP 8.2Security-Fixes Only Yes
PHP 8.1Unsupported Yes
PHP 8.0Unsupported Yes
PHP 7.4Unsupported Yes
PHP 7.3Unsupported Yes
PHP 7.2Unsupported Yes
PHP 7.1Unsupported Yes
PHP 7.0Unsupported Yes
PHP 5.6Unsupported Yes
PHP 5.5Unsupported Yes
PHP 5.4Unsupported Yes
PHP 5.3Unsupported Yes