Combine.php

<?php

/**
 * uri ve file path yollarını combinler
 * author: https://github.com/fatihgvn
 * source: https://gist.github.com/fatihgvn/8cb5c3bd085c3a097fee0f2b4b005020
 * date: 19.08.2019
 */
class Combine
{
  /**
   * yerel dosya sistemine göre bir veya iki dizini kurallara uygun şekilde birleştirir.
   * istenirse bu dizinin olup olmadığı sorgulanabilir
   *
   * @param string  $base   başlangıç dizini
   * @param string  $com    eklenecek dizin
   * @param boolean $isReal dizin kontrolü
   *
   * @return String   if $isReal is false
   * @return Var      if $isReal is true
   */
  public static function path($base, $com = null, $isReal = false)
  {
    if(substr($base, -1)!=DIRECTORY_SEPARATOR) $base.=DIRECTORY_SEPARATOR;
    if($com) $base.=$com;
    $base = preg_replace('/(\/+|\\\\+)/', DIRECTORY_SEPARATOR, $base);
    while(preg_match('/(\/[\w\s_-]+\/\.\.)/', $base)){
      $base = preg_replace('/(\/[\w\s_-]+\/\.\.)/', "", $base);
      if(preg_match('/\/\.\.\//', $base))
        throw new \Exception("Error directory don't have parent folder!", 1);
    }
    if($isReal){
      $base = realpath($base);
      if(is_dir($base)) $base .= DIRECTORY_SEPARATOR;
    }
    return $base;
  }

  /**
   * yerel dosya sistemine göre bir veya iki dizini kurallara uygun şekilde birleştirir.
   * istenirse bu dizinin olup olmadığı sorgulanabilir
   *
   * @param string  $base   başlangıç dizini
   * @param string  $com    eklenecek dizin
   *
   * @return Var  Eğer $base yanlış yapıya sahipse false yanıtı verir.
   *              Eğer $base doğruysa yeni uri adresini verir.
   */
  public static function uri($base, $com)
  {
    // check base
    if(preg_match('/(https?|ftp|tcp|udp):\/\/([\w]+\.)?([\w]{4,})((\.\w{2,5}){1,2})/', $base)){
      $base = parse_url($base);

      if(preg_match('/^\//', $com)){
        $base['path'] = $com;
        unset($base['query']);
      }elseif (preg_match('/^\.\//', $com)) {
        $base['path'] = strrev(preg_replace('/^[\w\s-_\.]+\//',"",strrev($base['path'])));
        $base['path'] .= substr($com, 1);
        unset($base['query']);
      }else if(parse_url($com , PHP_URL_QUERY) != null){
        if(isset($base['query'])){
          $base['query'] .= '&'.substr($com, 1);
        }else{
          $base['query'] = substr($com, 1);
        }
      }

      if(!isset($base['query'])) return $base["scheme"]."://".$base["host"].$base['path'];
      else return $base["scheme"]."://".$base["host"].$base['path'].'?'.$base['query'];

    }else {
      return false;
    }
  }


}

test.php

<?php

require_once 'Combine.php';

var_dump(Combine::uri("http://example.com/deneme.php?a=asdasd","/index.php"));
// string(35) "http://example.com/index.php"

var_dump(Combine::uri("http://example.com/deneme.php?a=asdasd","/index.php?deneme=test"));
// string(47) "http://example.com/index.php?deneme=test"

var_dump(Combine::uri("http://example.com/deneme.php?a=asdasd","?add=test"));
// string(54) "http://example.com/deneme.php?a=asdasd&add=test"

var_dump(Combine::uri("http://example.com/deneme/asdasd","?a=asdasd"));
// string(48) "http://example.com/deneme/asdasd?a=asdasd"

var_dump(Combine::uri("http://example.com/deneme/asdasd.php","./index.php"));
// string(42) "http://example.com/deneme/index.php"

var_dump(Combine::path("www///system", "Combine/../"));
// string(11) "www/system/"

var_dump(Combine::path("System", "Combine/../", true));
// string(40) "/home/snow/Desktop/localhost/www/System/"

var_dump(Combine::path("System", "Combine", true));
// string(48) "/home/snow/Desktop/localhost/www/System/Combine/"

var_dump(Combine::path("System", "Combine/notPath", true)); // if you try to create a path that does not exist
// bool(false)

var_dump(Combine::path("System", "Combine/class.Combine.php", true)); // you can also select a file
//string(65) "/home/snow/Desktop/localhost/www/System/Combine/class.Combine.php"

var_dump(Combine::path("/home/testuser\\badPath///////repair"));
// string(30) "/home/testuser/badPath/repair/"

var_dump(Combine::path("/System/Combine/test/asd", "../../../../../"));
// throw error output