librex-extra/misc/tools.php

<?php
    function get_root_domain($url)
    {
        $split_url = explode("/", $url);
        $base_url = $split_url[2];

        $base_url_main_split = explode(".", strrev($base_url));
        $root_domain = strrev($base_url_main_split[1]) . "." . strrev($base_url_main_split[0]);

        return $root_domain;
    }

    function check_ddg_bang($query)
    {

        $bangs_json = file_get_contents("static/misc/ddg_bang.json");
        $bangs = json_decode($bangs_json, true);

        if (substr($query, 0, 1) == "!")
            $search_word = substr(explode(" ", $query)[0], 1);
        else
            $search_word = substr(end(explode(" ", $query)), 1);

        $bang_url = null;

        foreach($bangs as $bang)
        {
            if ($bang["t"] == $search_word)
            {
                $bang_url = $bang["u"];
                break;
            }
        }

        if ($bang_url)
        {
            $bang_query_array = explode("!" . $search_word, $query);
            $bang_query = trim(implode("", $bang_query_array));

            $request_url = str_replace("{{{s}}}", $bang_query, $bang_url);
            // $request_url = check_for_privacy_frontend($request_url);

            header("Location: " . $request_url);
            die();
        }
    }

    // Only works in indivious (original), ahmia (original) and image proxy
    function request($url)
    {
        global $config;

        $ch = curl_init($url);
        curl_setopt_array($ch, $config->curl_settings);
        $response = curl_exec($ch);

        return $response;
    }

    function print_elapsed_time($start_time)
        {
            $end_time = number_format(microtime(true) - $start_time, 2, '.', '');
            echo "<p id=\"time\">Fetched the results in $end_time seconds</p>";
        }

    function print_next_page_button($text, $page, $query, $type)
    {
        echo "<form class=\"page\" action=\"search.php\" target=\"_top\" method=\"post\" enctype=\"multipart/form-data\" autocomplete=\"off\">";
        echo "<input type=\"hidden\" name=\"p\" value=\"$page\" />";
        echo "<input type=\"hidden\" name=\"q\" value=\"" . htmlspecialchars($query) ."\" />";
        echo "<input type=\"hidden\" name=\"t\" value=\"$type\" />";
        echo "<button type=\"submit\">$text</button>";
        echo "</form>";
    }
?>