Keep in mind that this method can't handle schemas in compact syntax!
(PHP 5, PHP 7)
DOMDocument::relaxNGValidate — Performs relaxNG validation on the document
$filename
) : boolPerforms » relaxNG validation on the document based on the given RNG schema.
filenameThe RNG file.
成功时返回 TRUE， 或者在失败时返回 FALSE。
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.