librex/misc/tools.php

<?php
    function get_base_url($url)
    {
        $split_url = explode("/", $url);
        $base_url = $split_url[0] . "//" . $split_url[2] . "/";
        return $base_url;
    }

    function check_for_privacy_friendly_alternative($url)
    {
        $config = require "config.php";

        if ($config->replace_youtube_with_invidious != null && strpos($url, "youtube.com"))
            $url = $config->replace_youtube_with_invidious . explode("youtube.com", $url)[1];
        else if ($config->replace_instagram_with_bibliogram != null && strpos($url, "instagram.com"))
        {
            if (!strpos($url, "/p/"))
                $config->replace_instagram_with_bibliogram .= "/u";

            $url = $config->replace_instagram_with_bibliogram . explode("instagram.com", $url)[1];
        }
        else if ($config->replace_twitter_with_nitter != null && strpos($url, "twitter.com"))
            $url = $config->replace_twitter_with_nitter . explode("twitter.com", $url)[1];
        else if ($config->replace_reddit_with_libreddit != null && strpos($url, "reddit.com"))
            $url = $config->replace_reddit_with_libreddit . explode("reddit.com", $url)[1];

        return $url;
    }

    function get_xpath($response)
    {
        $htmlDom = new DOMDocument;
        @$htmlDom->loadHTML($response);
        $xpath = new DOMXPath($htmlDom);

        return $xpath;
    }

    function request($url)
    {
        $config = require "config.php";

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

        return $response;
    }

    function human_filesize($bytes, $dec = 2) 
    {
        $size   = array('B', 'kB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB');
        $factor = floor((strlen($bytes) - 1) / 3);

        return sprintf("%.{$dec}f ", $bytes / pow(1024, $factor)) . @$size[$factor];
    }

    function remove_special($string) 
    {
        $string = str_replace(' ', '-', $string); // Replaces all spaces with hyphens.
     
        return preg_replace('/[^A-Za-z0-9\-]/', '', $string); // Removes special chars.
     }

    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 id=\"page\" action=\"search.php\" target=\"_top\" method=\"post\" enctype=\"multipart/form-data\" autocomplete=\"off\">";
        echo "<input type=\"hidden\" name=\"p\" value=\"" . $page . "\" />";
        echo "<input type=\"hidden\" name=\"q\" value=\"$query\" />";
        echo "<input type=\"hidden\" name=\"type\" value=\"$type\" />";
        echo "<button type=\"submit\">$text</button>";
        echo "</form>"; 
    }
?>