Themsaid\Langman\Manager::getKeysExistingInALanguageButNotTheOther PHP Method

    public function getKeysExistingInALanguageButNotTheOther($values)
    {
        $missing = [];
        // Array of keys indexed by fileName.key, those are the keys we looked
        // at before so we save them in order for us to not look at them
        // again in a different language iteration.
        $searched = [];
        // Now we add keys that exist in a language but missing in any of the
        // other languages. Those keys combined with ones with values = ''
        // will be sent to the console user to fill and save in disk.
        foreach ($values as $key => $value) {
            list($fileName, $languageKey, $key) = explode('.', $key, 3);
            if (in_array("{$fileName}.{$key}", $searched)) {
                continue;
            }
            foreach ($this->languages() as $languageName) {
                if (!Arr::has($values, "{$fileName}.{$languageName}.{$key}") && !array_key_exists("{$fileName}.{$languageName}.{$key}", $values)) {
                    $missing[] = "{$fileName}.{$key}:{$languageName}";
                }
            }
            $searched[] = "{$fileName}.{$key}";
        }
        return $missing;
    }

 /**
  * Get an array of keys that have missing values with a hint
  * from another language translation file if possible.
  *
  * ex: [ ['key' => 'product.color.nl', 'hint' => 'en = "color"'] ]
  *
  * @param array $languages
  * @return array
  */
 private function getMissing(array $languages)
 {
     $files = $this->manager->files();
     // Array of content of all files indexed by fileName.languageKey
     $filesResults = [];
     // The final output of the method
     $missing = [];
     // Here we collect the file results
     foreach ($files as $fileName => $languageFiles) {
         foreach ($languageFiles as $languageKey => $filePath) {
             $filesResults[$fileName][$languageKey] = $this->manager->getFileContent($filePath);
         }
     }
     $values = Arr::dot($filesResults);
     $emptyValues = array_filter($values, function ($value) {
         return $value == '';
     });
     // Adding all keys that has values = ''
     foreach ($emptyValues as $dottedValue => $emptyValue) {
         list($fileName, $languageKey, $key) = explode('.', $dottedValue, 3);
         $missing[] = "{$fileName}.{$key}:{$languageKey}";
     }
     $missing = array_merge($missing, $this->manager->getKeysExistingInALanguageButNotTheOther($values));
     return $missing;
 }