embed-rocks-test.php

<?php

$opts = array(
  'http'=>array(
    'method'=> "GET",
    'header'=> "x-api-key:your-key"
  )
);

$context = stream_context_create($opts);

// Open the file using the HTTP headers set above
$file = file_get_contents('https://api.embed.rocks/api/?url=https://yle.fi/uutiset/3-9870906', false, $context);

print $file;

?>