PHP - Get object/array value by path.

arrayGetByPath.php

<?php

/**
 * Get array value by path.
 *
 * @param string|array $path Array Path.
 * @param mixed $data Data where search.
 * @param mixed|null $default Default value on path not found.
 * @return mixed|null Value.
 * @see https://stackoverflow.com/a/27930028/717267
 */
function getByPath($path, $data, $default = null)
{
  if (!$data) {
    // If no-data, return $default value.
    return $default;
  }

  if (!is_array($path)) {
    // Split path into Array
    $path = explode('.', $path);
  }

  if (!is_array($data)) {
    // Convert $data to Array
    $data = json_decode(json_encode($data), true);
  }

  $temp = &$data;

  foreach ($path as $key) {
    if (is_array($temp)) {
      // Go to path key
      $temp = &$temp[$key];
    } else {
      // Can not get the path
      return $default;
    }
  }

  // Path result
  return $temp;
}