Display Spotify Episodes on Your Website: Simple API

spotifyAPI.php

<?php
add_shortcode( 'spotify', 'getSpotify' );
function getSpotify(){
	// Add 'YOUR_CLIENT_ID' and 'YOUR_CLIENT_SECRET' with your actual Spotify API credentials
	$client_id = '';
	$client_secret = '';
	$show_id = '';
	

	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL, 'https://accounts.spotify.com/api/token');
	curl_setopt($ch, CURLOPT_POST, 1);
	curl_setopt($ch, CURLOPT_POSTFIELDS, 'grant_type=client_credentials');
	curl_setopt($ch, CURLOPT_HTTPHEADER, [
        	'Authorization: Basic ' . base64_encode($client_id . ':' . $client_secret),
        	'Content-Type: application/x-www-form-urlencoded'
	]);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	$response = curl_exec($ch);
	curl_close($ch);
	$data = json_decode($response, true);
	$access_token = $data['access_token'];
    
	
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL, 'https://api.spotify.com/v1/shows/' . $show_id);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($ch, CURLOPT_HTTPHEADER, [
        	'Authorization: Bearer ' . $access_token,
        	'Content-Type: application/json'
    	]);
	$response = curl_exec($ch);
	curl_close($ch);
    
	$results = json_decode($response, true);
	
    	ob_start();
	?>
   
	<div class="podcast_row">
	<?php
		$total_episodes = $results['total_episodes'];
	
		if ( is_array($results['episodes']) ){
	    		if ( array_key_exists('items', $results['episodes']) ){
		    		$eachPod = $results['episodes']['items'];
		    		$i = 0; 
		    		foreach ( $eachPod as $pod ){
			    		if ($i <= 3){
				    		$name = $pod['name'];
				    		$URL = $pod['external_urls']['spotify'];
				    		$ID = $pod['id'];
				    
				    		?>
				    		<div class="column">
					    		<a href="<?php echo $URL; ?>" target="_blank">
						    		<p>Episode #<?php echo $total_episodes - $i; ?></p>
						    		<p class="title"><?php echo $name; ?></p>
					    		</a>
				    		</div>
				    
				    		<?php
					}
			    		$i++;
			    
		    		}
	   		}
    		} ?>
	</div><?php
    
	$content = ob_get_clean();

	return $content;
//echo '<pre>';
//print_R($results);
//echo '</pre>';
}
?>