Get audio tags in PHP

index.php

<?php

require_once './getid3/getid3.php';

/**
 * @param string $audio URL or local Path
 * @return array
 */
function get_audio_tags($audio) {
  // Initialize getID3 engine
  $getID3 = new \getID3;

  if (filter_var($audio, FILTER_VALIDATE_URL) !== false) {
    if ($fp_remote = fopen($audio, 'rb')) {
      $local_temp_path = tempnam('/tmp', 'getID3');
      if ($fp_local = fopen($local_temp_path, 'wb')) {
        while ($buffer = fread($fp_remote, 8192)) {
          fwrite($fp_local, $buffer);
        }
        fclose($fp_local);
        $info = $getID3->analyze($local_temp_path);
        unlink($local_temp_path);  // Delete temporary file
      } fclose($fp_remote);
    }
  } else {
    $info = $getID3->analyze($audio);
  }

  return [
    "title"=> $info['tags']['id3v2']['title'][0],
    "artist"=> $info['tags']['id3v2']['artist'][0],
    "album"=> $info['tags']['id3v2']['album'][0],
    "genre"=> join(', ', $info['tags']['id3v2']['genre']),
    "publisher"=> $info['tags']['id3v2']['publisher'][0],
    "cover"=> $info['comments']['picture'][0]['data'],
    "year"=> $info['tags']['id3v2']['year'][0]
  ];
}