XMLReader::setRelaxNGSchemaSource

If you get the following warning message when calling ->setRelaxNGSchemaSource(): "Warning: XMLReader::setRelaxNGSchemaSource()[xmlreader.setrelaxngschemasource]: Unable to set schema. This must beset prior to reading or schema contains errors." Make sure to load data using XMLReader::open() or XMLReader::xml() prior to calling XMLReader::setRelaxNGSchemaSource().Cf. comment on XMLReader::setRelaxNGSchema for more details.

This function and setRelaxNGSchema() seem picky about when they are called - right after the call to open(). For example:<?php  $schema="/path/to/schema.rng";  $xmlfile="/path/to/xml.xml";  $xml = new XMLReader();  $xml->open($xmlfile);  $xml->setRelaxNGSchemaSource(file_get_contents($schema));   while ($xml->read()) {   // ...  }   $xml->close();?>