XMLReader::getParserProperty
1. If you validate against relax-ng, no need to call $xml->setParserProperty(XMLReader::VALIDATE, true);
2. Be aware that $xml->isValid() will return validity for currently active node (ie. node currently positioned using $xml->read()). It won't check validity of your entire tree at once, but rather on a step by step basis
XMLReader::isValid
(PHP 5 >= 5.1.0)
XMLReader::isValid — Zeigt an, ob das geparste Dokument valide ist
Beschreibung
bool XMLReader::isValid
( void
)
Gibt einen boolschen Wert zurück, der anzeigt, ob das geparste Dokument sich aktuell in einem validen Zustand befindet.
Rückgabewerte
Gibt bei Erfolg TRUE zurück. Im Fehlerfall wird FALSE zurückgegeben.
Beispiele
Beispiel #1 Validierung von XML
<?php
$xml = XMLReader::open('test.xml');
// VALIDATE Option muss gesetzt werden
$xml->setParserProperty(XMLReader::VALIDATE, true);
var_dump($xml->isValid());
?>
Siehe auch
- XMLReader::setParserProperty() - Parser-Optionen setzen
- XMLReader::setRelaxNGSchema() - Dateiname oder URI des RelaxNG-Schema setzen
- XMLReader::setRelaxNGSchemaSource() - Zeichenkette setzen, die RelaxNG-Schemadaten enthält
- XMLReader::setSchema() - Validiert Dokument gegen XSD
add a note
User Contributed Notes
XMLReader::isValid - [4 notes]
remy dot damour at laposte dot net ¶
4 years ago
anzenews at volja dot net ¶
5 years ago
This comment is only partially correct:
"isValid() always returns false unless you enable checking for validity by $reader->setParserProperty(XMLReader::VALIDATE, true);"
This enables DTD checking, but you can also check by using RelaxNG (see setRelaxNGSchema() and setRelaxNGSchemaSource()).
And also, this is NOT correct:
"If you just need to check if XML file is well formed, successful loading into XMLReader object is usually enough."
It is not enough. Pull parsers operate on stream and if you have a large enough file they will not know it is well formed until it is read to the end. If you need to know if it is well formed or/and valid, read it till the end or validation error (you can use next() for fast reading if you don't care about contents).
zubin at trattonuovo dot com ¶
3 years ago
I encountered some problems to use isValid method with xml2assoc function.
I use this way to validate the entire xml file and put it into an associative array.
$xml = new XMLReader();
if (!$xml->xml($xml_string, NULL, LIBXML_DTDVALID)) {
echo "XML not valid: load error";
exit();
}
libxml_use_internal_errors(TRUE);
$xml_array = xml2assoc($xml);
$arErrors = libxml_get_errors();
$xml_errors = "";
foreach ($arErrors AS $xmlError) $xml_errors .= $xmlError->message;
if ($xml_errors != "") {
echo "XML not valid: ".$xml_errors;
exit();
}
//all ok
patryk dot szczyglowski at gmail dot com ¶
5 years ago
isValid() always returns false unless you enable checking for validity by:
$reader->setParserProperty(XMLReader::VALIDATE, true);
where $reader is XMLReader object.
Beware, once you enable this check, PHP will search for DTD file and possibly produce warnings.
If you just need to check if XML file is well formed, successful loading into XMLReader object is usually enough.