Update code samples

Author: meili-bot

snippets/generated-code-samples/code_samples_compact_index_1.mdx

@@ -9,6 +9,10 @@ curl \
 client.index('movies').compact()
 ```
 
+```php PHP
+$client->index('movies')->compact();
+```
+
 ```java Java
 client.index("INDEX_NAME").compact();
 ```