Base::read PHP Method

    function read($file, $lf = FALSE)
    {
        $out = @file_get_contents($file);
        return $lf ? preg_replace('/\\r\\n|\\r/', "\n", $out) : $out;
    }

 /**
  * combine a whole asset group
  * @param $collection
  * @return array
  */
 public function combine($collection)
 {
     $public_path = $this->f3->get('ASSETS.combine.public_path');
     if (empty($collection) || count($collection) <= 1) {
         return $collection;
     }
     $type = false;
     $hash_key = '';
     $slots = array(0 => array(), 1 => array(), 2 => array(), 3 => array());
     foreach ($collection as $i => $asset) {
         $type = $asset['type'];
         if ($asset['origin'] == 'inline') {
             $slots[3][] = $asset['data'];
             continue;
         }
         $path = $asset['path'];
         $exclude = $this->f3->get('ASSETS.combine.exclude');
         if ($asset['origin'] == 'external') {
             $slots[0][] = $asset;
         } elseif (is_file($path) && ((!isset($asset['exclude']) || !in_array('combine', $this->f3->split($asset['exclude']))) && (empty($exclude) || !preg_match('/' . $exclude . '/i', $path))) && (!isset($asset['media']) || in_array($asset['media'], array('all', 'screen')))) {
             // check if one of our combined files was changed (mtime)
             $hash_key .= $path . filemtime($path);
             $slots[1][] = $path;
         } else {
             $slots[2][] = $asset;
         }
     }
     if (!empty($slots[1])) {
         $filepath = $public_path . $this->f3->hash($hash_key) . '.' . $type;
         if (!is_dir($public_path)) {
             mkdir($public_path, 0777, true);
         }
         $content = array();
         if (!is_file($filepath)) {
             foreach ($slots[1] as $path) {
                 $data = $this->f3->read($path);
                 if ($type == 'css') {
                     $data = $this->fixRelativePaths($data, pathinfo($path, PATHINFO_DIRNAME) . '/');
                 }
                 $content[] = $data;
             }
             $this->f3->write($filepath, implode(($type == 'js' ? ';' : '') . "\n", $content));
         }
         $slots[1] = array(array('path' => $filepath, 'type' => $type, 'origin' => 'internal'));
     }
     if (!empty($slots[3])) {
         $slots[3] = array(array('data' => implode($slots[3]), 'type' => $type, 'origin' => 'inline'));
     }
     return array_merge($slots[0], $slots[1], $slots[2], $slots[3]);
 }