Large Resource

Here is simple to retrieve the HTTP response status code of URL using HEAD method in PHP.

<?php

$parseurl = parse_url($_GET["url"]);

$service_port = getservbyname('www', 'tcp');

$address = gethostbyname($parseurl["host"]);

$socket = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
if ($socket < 0) {
    echo "socket_create() failed: reason: " . socket_strerror($socket) . "\n";
}

$result = socket_connect($socket, $address, $service_port);
if ($result < 0) {
    echo "socket_connect() failed.\nReason: ($result) " . socket_strerror($result) . "\n";
}

$in = "HEAD " . $parseurl["path"] . " HTTP/1.1\r\n";
$in .= "Host: " . $parseurl["host"] . "\r\n";
$in .= "Connection: Close\r\n\r\n";
$out = '';

socket_write($socket, $in, strlen($in));

if ($out = socket_read($socket, 2048)) {
    $response = explode("\n", $out);
    $response_status = explode(" ", $response[0]);
    $response_string = $response_status[1] . " " . $response_status[2];
    echo $response_string; // prints response code and status
}

socket_close($socket);
?>

The above php code, parse the querystring complete url, makes socket connection, pass the head method in headers and finally prints the response code and status.

Here is the example how to pass the complete url to above php code.

http.php?url=http://www.google.com/