<?php

$url = 'https://campingqualite.com/en/campings/camping-loffrerie/';
$html = file_get_contents($url);
$document = new DOMDocument();

ob_start();
$document->loadHTML($html);
ob_end_clean();

$scriptTags = $document->getElementsByTagName('head')->item(0)->getElementsByTagName('script');
$schemaTag = null;

for ($i = 0; $i < $scriptTags->length && is_null($schemaTag); $i++) {
    if ($scriptTags->item($i)->getAttribute('type') === 'application/ld+json') {
        $schemaTag = $scriptTags->item($i);
    }
}

$schema = json_decode($schemaTag->nodeValue);

echo '<pre>';
var_dump($schema);
echo '</pre>';

?>