PHPMUsicXML is a library for creating MusicXML files and converting music from MIDI format to MusicXML format. This library contains logic and models. Each element in MusicXML is represented by one class as its model.

PHPMusicXML refer to https://github.com/w3c/musicxml/tree/gh-pages/docs/musicxml-reference/elements to create models.

Expected capabilities of this library are:

1. read MusicXML file, modify and write modified MusicXML file
2. convert music from MIDI format to MusicXML format either compressed or uncompressed
3. convert music from MusicXML format to MIDI format either compressed or uncompressed

Uncompressed MusicXML is XML file according to https://www.w3.org/2021/06/musicxml40/

<?php

use MusicXML\MusicXML;

require_once "inc.lib/autoload.php";

$musicXML = new MusicXML();
try
{
    $midi = $musicXML->loadMidi("test.mid");
    $xml = $musicXML->midiToMusicXml($midi, "Test", "4.0", "xml");
    file_put_contents("test.xml", $xml);
}
catch(Exception $e)
{
    echo $e->getMessage();  
}

Compressed MusicXML is zipped files containing XML file according to https://www.w3.org/2021/06/musicxml40/, mimetype, and META-INF/container.xml

<?php

use MusicXML\MusicXML;
use MusicXML\Util\MXL;

require_once "inc.lib/autoload.php";

$musicXML = new MusicXML();
try
{
    $midi = $musicXML->loadMidi("test.mid");
    $mxl = new MXL();
    $xml = $musicXML->midiToMusicXml($midi, "Test", "4.0", "xml");
    file_put_contents("convert.mxl", $mxl->createMxl("Test", $xml));
}
catch(Exception $e)
{
    echo $e->getMessage();  
}

Another way

<?php

use MusicXML\MusicXML;

require_once "inc.lib/autoload.php";

$musicXML = new MusicXML();
try
{
    $midi = $musicXML->loadMidi("test.mid");
    $mxl = $musicXML->midiToMusicXml($midi, "Test", "4.0", "mxl");
    file_put_contents("convert.mxl", $mxl);
}
catch(Exception $e)
{
    echo $e->getMessage();  
}

1. October 5th 2023 - result is playable but duration longer than expected
2. October 9th 2023 - 21 percent (95 of 444) elements created
3. October 10th 2023 - 53 percent (235 of 444) elements created
4. October 11th 2023 - 100 percent elements created

Support us to develop this library and subscribe our YouTube channel at https://www.youtube.com/@MusicPlanetbiru

Thank you https://github.com/robbie-cao/ for your library at https://github.com/robbie-cao/midi-class-php/. We learn much about MIDI file format and using code from your library and attach it to our code. We need MIDI parser before create MusicXML file from a MIDI file.