socket_recvfrom

socket_recvfrom

Receives data from a socket whether or not it is connection-oriented

 **socket_recvfrom** Socket $socket string $data int $length int $flags string $address int $port

The function receives bytes of data in from on port (if the socket is not of type ) using . can be used to gather data from both connected and unconnected sockets. Additionally, one or more flags can be specified to modify the behaviour of the function. socket_recvfrom``length``data``address``port``AF_UNIX``socket``socket_recvfrom

The and must be passed by reference. If the socket is not connection-oriented, will be set to the internet protocol address of the remote host or the path to the UNIX socket. If the socket is connection-oriented, is null. Additionally, the will contain the port of the remote host in the case of an unconnected or socket. address``port``address``address``port``AF_INET``AF_INET6

socket The must be a instance previously created by socket_create(). socket``Socket

data The data received will be fetched to the variable specified with . data

length Up to bytes will be fetched from remote host. length

flags The value of can be any combination of the following flags, joined with the binary OR () operator. flags``|

address If the socket is of the type type, is the path to the file. Else, for unconnected sockets, is the IP address of, the remote host, or null if the socket is connection-oriented. AF_UNIX``address``address

port This argument only applies to and sockets, and specifies the remote port from which the data is received. If the socket is connection-oriented, will be null. AF_INET``AF_INET6``port

returns the number of bytes received,

or false if there was an error. The actual error code can be retrieved by calling . This error code may be passed to to get a textual explanation of the error. socket_recvfrom``socket_last_error``socket_strerror

Voorbeeld: example

<?php

$socket = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
socket_bind($socket, '127.0.0.1', 1223);

$from = '';
$port = 0;
socket_recvfrom($socket, $buf, 12, 0, $from, $port);

echo "Received $buf from remote address $from and remote port $port" . PHP_EOL;
?>

This example will initiate a UDP socket on port 1223 of 127.0.0.1 and print at most 12 characters received from a remote host.

socket_recv``socket_send``socket_sendto``socket_create