Code for the Youtube Tutorial https://youtu.be/1kRy0JgPC04

index.php

<?php

error_reporting(-1);
ini_set('display_errors', 'On');


$url = 'https://www.green-secure.de/podcast/';

$domDocument = new DOMDocument();

@$domDocument->loadHTMLFile($url);

$xpath = new DOMXPath($domDocument);

$elements = $xpath->query('//div[@class="elementor-shortcode"]/script');

if($elements->length === 0){
    echo "Keine Elemente zum Selector gefunden";
    return;
}

$context = stream_context_create([
        'http'=>[
            'header'=>['Accept: application/json']
        ]
        ]);

foreach($elements as $element){
    $source = $element->getAttribute('data-configuration');
    if(!$source){
        echo "Attribut data-configuration wurde nicht gefunden";
        continue;
    }
    $json = file_get_contents($source,false,$context);
    $data = json_decode($json);
    
    $fileName = str_replace(['?', '"', '/', '*', '|', ':', '<', '>'], '-', $data->episode->title).'.mp3';
    $mp3Source = $data->episode->media->mp3;
    
    file_put_contents($fileName, fopen($mp3Source,'r'));
    echo sprintf("Neueste Podcast Episode mit dem Titel '%s' wurde heruntergeladen", $fileName);
    break;
}