Welcome to a tutorial on how to create a simple PHP audio player. Want to create your own podcast or playlist? Once upon a time, we have to fight with digital dragons and use all sorts of plugins to do that. But today, it is nearly as simple as using an <audio>
tag. Read on for the example!
ⓘ I have included a zip file with all the source code at the start of this tutorial, so you don’t have to copy-paste everything… Or if you just want to dive straight in.
TABLE OF CONTENTS
DOWNLOAD & NOTES
Firstly, here is the download link to the example code as promised.
QUICK NOTES
- Put your audio files into the
audio/
folder. - Launch
audio.php
in the browser.
SCREENSHOT
EXAMPLE CODE DOWNLOAD
Click here to download all the example source code, I have released it under the MIT license, so feel free to build on top of it or use it in your own project.
PHP AUDIO PLAYER
All right, let us now get into how to create a PHP audio player with a playlist.
STEP 1) THE PHP & HTML
<div id="demo">
<!-- (A) AUDIO TAG -->
<audio id="demoAudio" controls></audio>
<!-- (B) PLAYLIST -->
<div id="demoList"><?php
// (B1) GET ALL SONGS
$songs = glob("audio/*.{mp3,webm,ogg,wav}", GLOB_BRACE);
// (B2) OUTPUT SONGS IN <DIV>
if (is_array($songs)) { foreach ($songs as $k=>$s) {
$name = basename($s);
printf("<div data-src='%s' class='song'>%s</div>", rawurlencode($name), $name);
}} else { echo "No songs found!"; }
?></div>
</div>
Yep, there are only 2 components for this simple example.
- The audio player, good old
<audio>
tag. - The playlist.
- We will use
$songs = glob("audio/*.{mp3,webm,ogg,wav}", GLOB_BRACE)
to get the list of songs from theaudio
folder. Take note,glob
will not recursively read into sub-folders. - Then, loop through
$songs
and generate the playlist. Take note of the customdata-src
here.
- We will use
STEP 2) JAVASCRIPT PLAYLIST INIT
var aud = {
// (A) INITIALIZE PLAYER
player : null, // html <audio> element
playlist : null, // html playlist
now : 0, // current song
init : () => {
// (A1) GET HTML ELEMENTS
aud.player = document.getElementById("demoAudio");
aud.playlist = document.querySelectorAll("#demoList .song");
// (A2) LOOP THROUGH ALL THE SONGS, CLICK TO PLAY
for (let i=0; i<aud.playlist.length; i++) {
aud.playlist[i].onclick = () => aud.play(i);
}
// (A3) AUTO PLAY WHEN SUFFICIENTLY LOADED
aud.player.oncanplay = aud.player.play;
// (A4) AUTOPLAY NEXT SONG IN PLAYLIST WHEN CURRENT SONG ENDS
aud.player.onended = () => {
aud.now++;
if (aud.now>=aud.playlist.length) { aud.now = 0; }
aud.play(aud.now);
};
}
};
window.addEventListener("DOMContentLoaded", aud.init);
Unfortunately, <audio>
does not support playlists at the time of writing. So we will need to build our own, var aud
contains the mechanics of our custom playlist player.
- (A1) Get the HTML elements.
aud.player
refers to<audio id="demoAudio">
.aud.playlist
is anHTMLCollection
of songs contained in<div id="demoList">
.- The idea is to use
aud.now
to track the current song playing inaud.playlist
. For example,aud.now = 0
will indicate the first song,aud.now = 1
indicates the second, and so on.
- (A2) Loop through all the songs, attach “click to play”
onclick = aud.play
. - (A3) Just a bit of precaution here, we wait until the song is sufficiently buffered before playing.
- (A4) When the current song ends, we do a
aud.now++
and play the next song automatically.
STEP 3) PLAY SONG
// (B) START PLAYING
aud.play : id => {
// (B1) UPDATE CURRENT & PLAY
aud.now = id;
aud.player.src = "audio/" + aud.playlist[id].dataset.src;
// (B2) A LITTLE BIT OF COSMETIC
for (let i=0; i<aud.playlist.length; i++) {
if (i==id) { aud.playlist[i].classList.add("now"); }
else { aud.playlist[i].classList.remove("now"); }
}
};
Lastly, we have a function that plays the song itself. Very simply, we set aud.play.src
to the selected data-src
. The end. aud.player.oncanplay
will automatically start playing once sufficiently buffered.
EXTRA BITS & LINKS
That’s all for the tutorial, and here is a small section on some extras and links that may be useful to you.
CUSTOMIZING THE AUDIO PLAYER?
Take extra note that <audio>
cannot be styled or customized (at the time of writing). But we can build one ourselves, check out the custom audio player link below.
COMPATIBILITY CHECKS
- HTML Audio Element – CanIUse
- Arrow Functions – CanIUse
Works on all modern “Grade A” browsers.
LINKS & REFERENCES
- <audio>: The Embed Audio element – MDN
- Custom Audio Player With Playlist – Code Boxx
- Need to read sub-folders? Check out List Files & Folders In PHP – Code Boxx
THE END
Thank you for reading, and we have come to the end. I hope that it has helped you to better understand, and if you want to share anything with this guide, please feel free to comment below. Good luck and happy coding!
How is it possible to add pause between one audio and another? I tried with the code: after the (A3) and before (A4) but it didn’t serve. Grateful for the attention. Grato pela atenção.
audio.player.currentTime = 50;
Thank you very much W.S. TOh. I’m using your code to create an playlist for english learning. For my doctoral proficiency exam. Your code is perfect. Novamente, muito obrigado.