RELAX ...

https://www.youtube.com/playlist?list=PL_b7zSwNKPrEfrv_Uof86HCXKKTsZwSrT

http://tools.eti.pw/youtube-playlist-random-generator.php

code HTML avec du code JS simple

<div id="player"></div><script> var playlistId = "PLPIYv4s-8eQJJlMW8QOIP06-1-5600f7O"; var tag = document.createElement("script"); tag.src = "https://www.youtube.com/iframe_api";
var firstScriptTag = document.getElementsByTagName("script")[0]; firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
var player;
function onYouTubeIframeAPIReady() { player = new YT.Player("player", { width: "400", height: "300", events: { "onReady": onPlayerReady, "onStateChange": onPlayerStateChange } }); }
var playlistArray; var playListArrayLength; var maxNumber;
var oldNumber = 0; var NewNumber = 0;
function newRandomNumber() { oldNumber = NewNumber; NewNumber = Math.floor(Math.random() * maxNumber); if (NewNumber == oldNumber) { newRandomNumber(); } else { return NewNumber; } }
function onPlayerReady(event) { player.loadPlaylist({ "listType": "playlist", "list": playlistId });}
var firstLoad = true;function onPlayerStateChange(event) { console.log(event.data); if (event.data == YT.PlayerState.ENDED) { player.playVideoAt(newRandomNumber()); } else { if (firstLoad && event.data == YT.PlayerState.PLAYING) { firstLoad = false; playlistArray = player.getPlaylist(); playListArrayLength = playlistArray.length; maxNumber = playListArrayLength; NewNumber = newRandomNumber(); player.playVideoAt(newRandomNumber()); } }} </script>

Changer la valeur du code :

width: "400", height: "300",

par :

width: "001", height: "001",

pour que le PLAYER soit (si petit) invisible pour l'utilisateur et le planquer quelque part (meme dans le titre ...)

code HTML avec du code PHP simple - fonction rand ()

Faire pareil que au dessus . . .