xmlwriter_start_document

• Return type added: bool
• Parameter name of parameter #1 changed: $xmlwriter to $writer
• Parameter type added for parameter #1 ($writer): XMLWriter
• Parameter type added for parameter #2 ($version): ?string
• Parameter default value added for position #2 ($version): "1.0"
• Parameter type added for parameter #3 ($encoding): ?string
• Parameter default value added for position #3 ($encoding): null
• Parameter type added for parameter #4 ($standalone): ?string
• Parameter default value added for position #4 ($standalone): null

  xmlwriter_start_document(
-     $xmlwriter,
+     XMLWriter $writer,
-     $version,
+     ?string $version = "1.0",
-     $encoding,
+     ?string $encoding = null,
-     $standalone
+     ?string $standalone = null
-   )
+   ): bool