$e) { $r = $e['resource']; echo "$idx: " . $r['resourceType'] . " id=" . ($r['id'] ?? '') . "\n"; if ($r['resourceType'] === 'Immunization') { echo "Immunization keys: " . implode(', ', array_keys($r)) . "\n"; if (isset($r['location'])) { echo "Location: " . json_encode($r['location']) . "\n"; } if (isset($r['encounter'])) { echo "Encounter: " . json_encode($r['encounter']) . "\n"; } } } } }