PHP Manual: socket

Description

function socket_sendto(
    Socket $socket,
    string $data,
    int $length,
    int $flags,
    string $address,
    ?int $port = null
): int|false

The function socket_sendto() sends length bytes from data through the socket socket to the port at the address address.

Parameters

socket

A Socket instance created using socket_create().

data

The sent data will be taken from buffer data.

length

length bytes from data will be sent.

flags

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

**Possible values for `flags`**
`MSG_OOB`	Send OOB (out-of-band) data.
`MSG_EOR`	Indicate a record mark. The sent data completes the record.
`MSG_EOF`	Close the sender side of the socket and include an appropriate notification of this at the end of the sent data. The sent data completes the transaction.
`MSG_DONTROUTE`	Bypass routing, use direct interface.

address

IP address of the remote host.

port

port is the remote port number at which the data will be sent.

Return Values

socket_sendto() returns the number of bytes sent to the remote host, or false if an error occurred.

Changelog

Version	Description
8.5.0	Now throws a ValueError when `port` is lower than 0 or greater than 65535.
8.0.0	`socket` is a Socket instance now; previously, it was a resource.
8.0.0	`port` is nullable now.

Examples

Example #1 socket_sendto() Example

<?php
    $sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);

    $msg = "Ping !";
    $len = strlen($msg);

    socket_sendto($sock, $msg, $len, 0, '127.0.0.1', 1223);
    socket_close($sock);
?>

socket_sendto

Description

Parameters

Return Values

Changelog

Examples

See Also