Send a magic packet over the Internet with PHP

PHP function to send a magic packet over the Internet

<?php
/* 
Online PHP Examples with Source Code
website: http://4evertutorials.blogspot.in/
*/
flush();
function WakeOnLan($addr, $mac,$socket_number) {

$addr_byte = explode(':', $mac);
$hw_addr = '';
for ($a=0; $a <6; $a++) $hw_addr .= chr(hexdec($addr_byte[$a]));
$msg = chr(255).chr(255).chr(255).chr(255).chr(255).chr(255);
for ($a = 1; $a <= 16; $a++) $msg .= $hw_addr;
// send it to the broadcast address using UDP
// SQL_BROADCAST option isn't help!!
$s = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
if ($s == false) {
echo "Error creating socket!\n";
echo "Error code is '".socket_last_error($s)."' - " . socket_strerror(socket_last_error($s));
return FALSE;
}
else {
// setting a broadcast option to socket:
$opt_ret = socket_set_option($s, 1, 6, TRUE);
if($opt_ret <0) {
echo "setsockopt() failed, error: " . strerror($opt_ret) . "\n";
return FALSE;
}
if(socket_sendto($s, $msg, strlen($msg), 0, $addr, $socket_number)) {
echo "Magic Packet sent successfully!";
socket_close($s);
return TRUE;
}
else {
echo "Magic packet failed!";
return FALSE;
}
}
}

// Port number where the computer is listening. Usually, any number between 1-50000 will do. Normally people choose 7 or 9.
$socket_number = "9";
// MAC Address of the listening computer's network device
$mac_addy = "00:01:02:03:04:05"; 
// IP address of the listening computer. Input the domain name if you are using a hostname (like when under Dynamic DNS/IP)
$ip_addy = gethostbyname("my.computer.com");
WakeOnLan($ip_addy, $mac_addy,$socket_number)
?>

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