Last updated: Fri, 05 Sep 2008

socket_sendto

(PHP 4 >= 4.0.7, PHP 5)

socket_sendto — Sends a message to a socket, whether it is connected or not

Description

int socket_sendto ( resource $socket , string $buf , int $len , int $flags , string $addr [, int $port ] )

The function socket_sendto() sends len bytes from buf through the socket socket to the port at the address addr .

Parameters

socket

A valid socket ressource created using socket_create().

buf

The sent data will be taken from buffer buf .

len

len bytes from buf 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.

addr

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 -1 if an error occured.

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);
?>


Here's how you can make an udp broadcast, useful sometimes, and does seem hard to figure out hwo to do..





<?php


$sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);


socket_set_option($sock, SOL_SOCKET, SO_BROADCAST, 1);


socket_sendto($sock, $broadcast_string, strlen($broadcast_string), 0, '255.255.255.255', $port);


?>

add a note

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