PHP Audio waveform player for multiple files based on wavesurfer-js.org

hello,
I need a PHP example for a wave player based on https://wavesurfer-js.org,
that can generate a long waveform for multiple files which scrolls according to the audio.

the waveform needs to be loaded while opening the web page, before clicking the start button.

files to be played:
file 1: https://samplelib.com/lib/preview/mp3/sample-3s.mp3
file 2: https://samplelib.com/lib/preview/mp3/sample-9s.mp3
file 3: https://samplelib.com/lib/preview/mp3/sample-12s.mp3

please check the attached image for illustration.
thx