Youtube

<?php
require_once('../protect_this.php');
include "../header.php";

ini_set("display_errors",1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);

function exception_error_handler($errno, $errstr, $errfile, $errline){
    throw new ErrorException($errstr, $errno, 0, $errfile, $errline);
}
set_error_handler('exception_error_handler');

echo '<div align="center">';
echo '<h1>youtube playlists</h1>';

if (isset($_GET['playlist_name'])) {
	$playlist_name = $_GET['playlist_name'];
	
	$json = file_get_contents("playlists/" . $playlist_name . ".json");
	$arr = json_decode($json, TRUE);
	$smaller_arrays = array_chunk($arr, 50); # youtube does not handle manual playlists with more than 50 elements
	
	if (count($smaller_arrays) > 1) {
 		echo 'You selected "' . $playlist_name . '" playlist, which contains more than 50 videos.<br>Which part do you want (each part contains 50 videos)?<br><br>';
	}

	$chunk_number = 1;
	foreach($smaller_arrays as $smaller_array) {
		$youtube_url = "https://www.youtube.com/watch_videos?video_ids=";
		foreach ($smaller_array as $video) {
			$video_id = $video["contentDetails"]["videoId"];
			$youtube_url = $youtube_url . $video_id . ",";
		}

		if (count($smaller_arrays) == 1) {
			echo "<script type='text/javascript'>window.open('".$youtube_url."', '_blank');</script>";
		}
		else {
			echo '<a href="' . $youtube_url . '" target="_blank"> Part ' . $chunk_number . '</a><br>';
		}

		$chunk_number++;
	}
}


$all_playlists = scandir("playlists/");
echo '<h2>all playlists</h2>';
echo '<p>';
foreach ($all_playlists as $playlist_filename) {
	if (strpos($playlist_filename, "json") != false) {
		$playlist_name = explode(".json", $playlist_filename)[0];
		echo '<a href="?playlist_name=' . $playlist_name . '">' . $playlist_name . '</a><br>';
	}
}
echo '</p>';
echo '</div>';

?>