Nomad changes

docs/snippets/php/llm/structured_extraction.md

@@ -0,0 +1,54 @@
+<!-- snippet:syntax-only -->
+
+```php title="PHP"
+<?php
+
+declare(strict_types=1);
+
+require_once __DIR__ . '/vendor/autoload.php';
+
+use Kreuzberg\Kreuzberg;
+use Kreuzberg\ExtractionConfig;
+use Kreuzberg\LlmConfig;
+use Kreuzberg\StructuredExtractionConfig;
+
+$schema = json_encode([
+    'type' => 'object',
+    'properties' => [
+        'title' => ['type' => 'string'],
+        'authors' => ['type' => 'array', 'items' => ['type' => 'string']],
+        'date' => ['type' => 'string'],
+    ],
+    'required' => ['title', 'authors', 'date'],
+    'additionalProperties' => false,
+], JSON_THROW_ON_ERROR);
+
+$llm = new LlmConfig(
+    model: 'openai/gpt-4o-mini',
+    apiKey: null,
+    baseUrl: null,
+    timeoutSecs: null,
+    maxRetries: null,
+    temperature: null,
+    maxTokens: null,
+);
+
+$structured = StructuredExtractionConfig::from_json(json_encode([
+    'schema' => json_decode($schema, true),
+    'schema_name' => 'paper_metadata',
+    'strict' => true,
+    'llm' => [
+        'model' => $llm->model,
+    ],
+], JSON_THROW_ON_ERROR));
+
+$config = new ExtractionConfig();
+$config->structured_extraction = $structured;
+
+$kreuzberg = new Kreuzberg($config);
+$result = $kreuzberg->extractFile('paper.pdf');
+
+if ($result->structured_output !== null) {
+    echo $result->structured_output, "\n";
+}
+```