(PHP 5 >= 5.1.0, PHP 7, PHP 8)
XMLReader::setRelaxNGSchema — Set the filename or URI for a RelaxNG Schema
$filename
Set the filename or URI for the RelaxNG Schema to use for validation.
filename
filename or URI pointing to a RelaxNG Schema.
成功时返回 true, 或者在失败时返回 false。
true
false