Nomad changes

docs/snippets/php/metadata/vector_database_integration.md

@@ -0,0 +1,50 @@
+```php title="PHP"
+<?php declare(strict_types=1);
+
+use Kreuzberg\Kreuzberg;
+use Kreuzberg\ExtractionConfig;
+use Kreuzberg\ChunkingConfig;
+use Kreuzberg\EmbeddingConfig;
+
+// Configure chunking with embedding generation for vector database
+$chunkConfig = new ChunkingConfig(
+    enableChunking: true,
+    chunkSize: 512,
+    chunkOverlap: 50,
+    chunker: "semantic"
+);
+
+$embeddingConfig = new EmbeddingConfig(
+    generateEmbeddings: true,
+    modelName: "all-minilm-l6-v2"
+);
+
+$config = new ExtractionConfig();
+$config->chunking = $chunkConfig;
+$config->embeddings = $embeddingConfig;
+
+$result = Kreuzberg::extract_file_sync("document.pdf", null, $config);
+
+// Store chunks and embeddings for vector database
+if ($result->chunks !== null) {
+    foreach ($result->chunks as $chunk) {
+        // Store in vector database with embedding
+        $vectorRecord = [
+            "text" => $chunk->text,
+            "embedding" => $chunk->embedding ?? [],
+            "metadata" => [
+                "source" => "document.pdf",
+                "page" => $chunk->page_number ?? null,
+                "chunk_id" => $chunk->chunk_id ?? null,
+            ]
+        ];
+
+        // Insert into vector DB (e.g., Pinecone, Weaviate, Milvus)
+        // storeInVectorDB($vectorRecord);
+
+        echo "Chunk: " . substr($chunk->text, 0, 50) . "...\n";
+        echo "Embedding dimensions: " . count($chunk->embedding ?? []) . "\n";
+    }
+}
+?>
+```