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Last updated: Tue, 19 Sep 2006


(PHP 4 >= 4.1.0, PHP 5)

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


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

The value of flags can be one of the following:

Table 1. possible values for flags

0x1 Process OOB (out-of-band) data.
0x2 Peek at incoming message.
0x4 Bypass routing, use direct interface.
0x8 Data completes record.
0x100 Data completes transaction.

Example 1. socket_sendto() Example

    $sh = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
    if (socket_bind($sh, '', 4242)) {
        echo "Socket bound correctly";
    $buf = 'Test Message';
    $len = strlen($buf);
    if (socket_sendto($sh, $buf, $len, 0x100, '', 4242) !== false) {
        echo "Message sent correctly";

See also socket_send() and socket_sendmsg().

Last updated: Tue, 19 Sep 2006