<?php
function isWebsiteUp($url) {
    $ch = curl_init($url); // Initialize cURL session with the target URL
    curl_setopt($ch, CURLOPT_TIMEOUT, 10); // Set a timeout for the cURL operation (10 seconds)
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10); // Set a timeout for the connection phase (10 seconds)
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); // Return the transfer as a string instead of outputting it directly
    curl_setopt($ch, CURLOPT_NOBODY, true); // Set to true to exclude the response body in the output
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true); // Follow any redirects

    curl_exec($ch); // Execute the cURL session
    $httpcode = curl_getinfo($ch, CURLINFO_HTTP_CODE); // Get the HTTP status code
    curl_close($ch); // Close the cURL session

    // Check if the HTTP status code indicates success (200 range)
    if ($httpcode >= 200 && $httpcode < 300) {
        return true; // Website is likely up
    } else {
        return false; // Website is likely down or inaccessible
    }
}

// Example usage:
$website_url = "https://www.google.com"; // Replace with the website you want to check

if (isWebsiteUp($website_url)) {
    echo "$website_url is UP.";
} else {
    echo "$website_url is DOWN or inaccessible.";
}
?>