Tinyurl Clean and custom alias maker

tiny.php

<?php

    /*
      How to execute : php tiny.php
      
      This will help you in generating readable custom alias with enumration (if already registered)
    */

    function getURL($url, $sh)
    {
        $data = file_get_contents("https://tinyurl.com/create.php?source=indexpage&url=$url&submit=Make+TinyURL%21&alias=$sh");
        preg_match('/<b>https:\/\/tinyurl.com\/.*<\/b>/', $data, $matches);
        $respShort = explode("</b>", explode("<b>", $matches[0])[1])[0];
        return $respShort;
    }

    echo("[?] Enter url to shorten : ");
    $url = explode("\n", fgets(STDIN))[0];
    echo("[?] Enter custom short alias : ");
    $short = explode("\n", fgets(STDIN))[0];
    echo("[~] Creating\n");
    $u = getURL($url, $short);
    $exists = true;
    $i = 1;
    while ($exists) 
    {
        if("https://tinyurl.com/$short" === $u)
        {
            echo("[!] Your Tiny URL : $u\n");
            break;
        }

        $d = preg_split("/-[0-9]+(-[0-9]+)*/", $short)[0];
        $short = "$d-$i";
        $u = getURL($url, $short);
        $i++;
    }
   

    
?>