Symfony PHP, function to get Project Root Directory

code_project_root_dir.md

symfony_get_project_root_dir.php

<?php

  public static function GetProjectRootDir()
  {
      $dirFullPath = __DIR__;

      //PRE: $dirs = /app/public/src/Helpers
      $dirs = explode('/',$dirFullPath);
    
      array_pop($dirs); //remove last element in array ('Helpers')
      array_pop($dirs); //remove the next last element from array ('src')

      //POST: $dirs = /app/public
      return implode('/',$dirs);
  }