File exists but does not include (require_once)

Question

I have a lodging (of dubious quality), I am making a require_once where I check if the file exists, and is giving error:

Warning: require_once(/home//base/Core Application.class.php): failed to open stream: No such file or directory in /home//base/config/autoload.php on line 106

Fatal error: require_once(): Failed Opening required '/home//base/Core Application.class.php' (include_path='.:/opt/php-5.5/Pear') in /home//base/config/autoload.php on line 106

My Autoload:

function cleanPath($lib, $file, $ds = '/') {
    $lib = rtrim($lib, '/\\');

    $path = strtolower($lib.$ds.$file);
    $path = str_replace(['\\', '/'], $ds, $path);

    return $path;
}

spl_autoload_register(
    function ($class){
         global $autoloadlog;

         $libs = [BASE, APPS.APP.DS];
         $ext  = '.class.php';
         $debug = !TRUE;

         $file = FALSE;

         $autoloadlog .= '<h3>'.$class.'</h3>';

         foreach ($libs as $lib) {
            $path = cleanPath($lib, $class.$ext, DIRECTORY_SEPARATOR);

             $autoloadlog .= '<pre>Lib: ' . (is_array($lib) ? implode(', ', $lib) : $lib) . PHP_EOL . 
                            'File: ' . $class.$ext . PHP_EOL . PHP_EOL . 
                            'Path: ' . $path . PHP_EOL . PHP_EOL . 
                            (file_exists($lib.$class.$ext) ? 'EXISTS!' : 'NOT exists!') . PHP_EOL . 
                            'BackTrace: ' . var_export(debug_backtrace(), true) . PHP_EOL . PHP_EOL . 
                            str_repeat('-', 200) . PHP_EOL . PHP_EOL.'</pre>';


             if (file_exists($path)){
                  $file = $lib.$class.$ext;
                  break;
             }
         }

         //$file = search_lib($libs, $class.$ext);

         // Debug
         if ($debug) echo $autoloadlog;

         // Se encontrou inclui o arquivo
         if ($file !== FALSE  && is_string($file) && $file !== '') {
             
             require_once $file;

             if (!class_exists($class, FALSE)){
                  trigger_error('Autoload error: File loaded, but class not found.' , E_USER_ERROR);
                  //throw new \Core\Exception\SystemException(\Core\Exception\Exceptions::E_CLASSNOTEXIST, [$class]);
             }

         } else { // Se não encontrar o arquivo lança um erro na tela. :)

             if (is_array($libs)) $libs = implode($class.$ext . '</code>, <code>', $libs);

             trigger_error("Autoload error: Can't find the file {$class}{$ext} on [{$libs}]!" , E_USER_ERROR);
             //throw new \Core\Exception\SystemException(\Core\Exception\Exceptions::E_FILENOTFOUND, ["<code>{$libs}".$class.$ext."</code>"]);
         }

    }
);

_{Note: Files are all saved with names in lower case (including folders), so I do one strtolower in function cleanPath.}

Return:

<h3>Core\Application</h3><pre>Lib: /home/u456897378/base/
File: Core\Application.class.php

Path: /home/<user>/base/core/application.class.php

NOT exists!
BackTrace: array (
  0 => 
  array (
    'function' => '{closure}',
    'args' => 
    array (
      0 => 'Core\\Application',
    ),
  ),
  1 => 
  array (
    'file' => '/home/<user>/public_html/index.php',
    'line' => 8,
    'function' => 'spl_autoload_call',
    'args' => 
    array (
      0 => 'Core\\Application',
    ),
  ),
)

--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

</pre><br />
<b>Warning</b>:  require_once(/home/<user>/base/Core\Application.class.php): failed to open stream: No such file or directory in <b>/home/<user>/base/config/autoload.php</b> on line <b>106</b><br />
<br />
<b>Fatal error</b>:  require_once(): Failed opening required '/home/<user>/base/Core\Application.class.php' (include_path='.:/opt/php-5.5/pear') in <b>/home/<user>/base/config/autoload.php</b> on line <b>106</b><br />

---

In short, the file exists, but gives error when doing the include, what may be going on?

Note: Works correctly in local environment (XAMPP + Windows).

Answer 1

I used a string to check if the file exists, but I used another to do the require:

if (file_exists($path)){
   $file = $lib.$class.$ext;
   break;
}

Solution:

if (file_exists($path)){
   $file = $path;
   break;
}

Answer 2

I know you already solved the problem, but just wanted to point out the possible problem, here you use:

$path = cleanPath($lib, $class.$ext, DIRECTORY_SEPARATOR);

To catch the $path, already here you try to remake the $path without cleaning him up:

 $file = $lib.$class.$ext;
 break;

And that’s why in your answer it worked, it’s probably because you’re using linux, where the files are sensitive when using upper and lower letters, so when using cleanPath worked, because inside of it you use strtolower.