The fastest php library to extract mp3 tags & meta information.

0.1.0 2023-05-28 18:37 UTC

This package is auto-updated.

Last update: 2024-05-30 00:48:08 UTC


The fastest PHP library to get mp3 tags&meta.

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This class extracts information from mpeg/mp3 audio:

  • Audio information:
    • Duration
    • Bit Rate
    • Sample Rate
    • Channels mode
    • Codec and Layer version
    • Frames count
  • Audio image (cover)
  • Audio tags:
tag id3v1 id3v2
song song TIT2
artist artist TPE1
album album TALB
year year TYER
comment comment COMM
track track TRCK
genre genre TCON


  1. Usage
  2. Performance
  3. Console scanner
  4. API
    • Audio information
    • Class methods
    • Settings
  5. Technical information


After creating an instance of Mp3Info with passing filename as the first argument to the constructor, you can retrieve data from object properties (listed below).

use wapmorgan\Mp3Info\Mp3Info;
// To get basic audio information
$audio = new Mp3Info('./audio.mp3');

// If you need parse tags, you should set 2nd argument this way:
$audio = new Mp3Info('./audio.mp3', true);

And after that access object properties to get audio information:

echo 'Audio duration: '.floor($audio->duration / 60).' min '.floor($audio->duration % 60).' sec'.PHP_EOL;
echo 'Audio bitrate: '.($audio->bitRate / 1000).' kb/s'.PHP_EOL;
// and so on ...

To access id3v1 tags use $tags1 property. To access id3v2 tags use $tags2 property. Also, you can use combined list of tags $tags, where id3v2 and id3v1 tags united with id3v1 keys.

// simple id3v1 tags
echo 'Song '.$audio->tags1['song'].' from '.$audio->tags1['artist'].PHP_EOL;
// specific id3v2 tags
echo 'Song '.$audio->tags2['TIT2'].' from '.$audio->tags2['TPE1'].PHP_EOL;

// combined tags (simplies way to get as more information as possible)
echo 'Song '.$audio->tags['song'].' from '.$audio->tags['artist'].PHP_EOL;


  • Typically it parses one mp3-file with size around 6-7 mb in less than 0.001 sec.
  • List of 112 files with constant & variable bitRate with total duration 5:22:28 are parsed in 1.76 sec. getId3 library against exactly the same mp3 list works for 8x-10x slower - 9.9 sec.
  • If you want, there's a very easy way to compare. Just install nass600/get-id3 package and run console scanner against any folder with audios. It will print time that Mp3Info spent and that getId3.

Console scanner

To test Mp3Info you can use built-in script that scans dirs and analyzes all mp3-files inside them. To launch script against current folder:

php bin/scan ./


Audio information

Property Description Values
$codecVersion MPEG codec version 1 or 2
$layerVersion Audio layer version 1 or 2 or 3
$audioSize Audio size in bytes. Note that this value is NOT equals file size. int
$duration Audio duration in seconds.microseconds like 3603.0171428571 (means 1 hour and 3 sec)
$bitRate Audio bit rate in bps like 128000 (means 128kb/s)
$sampleRate Audio sample rate in Hz like 44100 (means 44.1KHz)
$isVbr Contains true if audio has variable bit rate boolean
$hasCover Contains true if audio has a bundled image boolean
$channel Channel mode 'stereo' or 'dual_mono' or 'joint_stereo' or 'mono'
$tags1 Audio tags ver. 1 (aka id3v1). ["song" => "Song name", "year" => 2009]
$tags2 Audio tags ver. 2 (aka id3v2), only text ones. ["TIT2" => "Long song name", ...]
$tags Combined audio tags (from id3v1 & id3v2). Keys as in tags1. ["song" => "Long song name", "year" => 2009, ...]
$coverProperties Information about a bundled with audio image. ["mime_type" => "image/jpeg", "picture_type" => 1, ...]
$_parsingTime Contains time spent to read&extract audio information in sec.msec

Class methods

  • $audio = new Mp3Info($filename, $parseTags = false) Creates new instance of object and initiate parsing. If you need to parse audio tags (id3v1 and id3v2), pass true as second argument is.

  • $audio->getCover() Returns raw content of bundled with audio image.

  • Mp3Info::isValidAudio($filename) Static method that checks if file $filename looks like a mp3-file. Returns true if file looks like a mp3, otherwise false.


You can adjust some variables to reconfigure before instantiating of object:

  • Mp3Info::$headerSeekLimit - count of bytes to search for the first mpeg header in audio. Default: 2048 (bytes).
  • Mp3Info::$framesCountRead - count of mpeg frames to read before compute audio duration. Default: 2 (frames).

Technical information

Supporting features:

  • id3v1
  • id3v2.3.0, id3v2.4.0
  • CBR, Variable Bit Rate (VBR)

Used sources: