Keep in mind that this method can't handle schemas in compact syntax!
(PHP 5, PHP 7, PHP 8)
DOMDocument::relaxNGValidate — ドキュメントを relaxNG で検証する
指定した RNG スキーマに基づいて、ドキュメントを » relaxNG で検証します。
filename
RNG ファイル。
Keep in mind that this method can't handle schemas in compact syntax!
It's worth noting that when validation fails this function also triggers a warning.
You can suppress the warning using the set_error_handler and restore_error_handler functions.