PHP | XMLReader setParserProperty() Function
Last Updated :
03 May, 2021
The XMLReader::setParserProperty() function is an inbuilt function in PHP which is used to set parser options. This function can be used to validate the document.
Syntax:
bool XMLReader::setParserProperty( int $property, bool $value )
Parameters: This function accepts two parameters as mentioned above and described below:
- $property: It specifies an integer corresponding to one of Parser Option constants as given below:
- XMLReader::LOADDTD (1) This will load DTD but does not validate.
- XMLReader::DEFAULTATTRS (2) This will load DTD and default attributes but does not validate.
- XMLReader::VALIDATE (3) This will load DTD and validate while parsing.
- XMLReader::SUBST_ENTITIES (4) This will substitute entities and expand references.
- $value: It specifies whether to enable or disable the property.
Return Value: This function returns TRUE on success or FALSE on failure.
Below examples illustrate the XMLReader::setParserProperty() function in PHP:
Example 1:
html
<?xml version="1.0" encoding="utf-8"?>
<div>
<h1> Sample XML </h1>
</div>
|
php
<?php
$XMLReader = new XMLReader();
$XMLReader->open('data.xml');
$XMLReader->setParserProperty(XMLReader::VALIDATE, true);
$isProperty = $XMLReader->getParserProperty(XMLReader::VALIDATE);
if ($isProperty) {
echo 'Property is set.';
}
?>
|
Property is set.
Program 2:
html
<?xml version="1.0"?>
<!DOCTYPE html [
<!ELEMENT html (h1, p, heading, body)>
<!ELEMENT h1 (#PCDATA)>
<!ELEMENT p (#PCDATA)>
<!ELEMENT heading (#PCDATA)>
<!ELEMENT body (#PCDATA)>
]>
<html>
<h1>Hi</h1>
<p>World</p>
<heading>GeeksforGeeks</heading>
<body>Web Portal for Geeks</body>
</html>
|
php
<?php
$XMLReader = new XMLReader();
$XMLReader->open('data.xml');
$XMLReader->setParserProperty(XMLReader::VALIDATE, true);
while ($XMLReader->read()) {
if ($XMLReader->nodeType == XMLREADER::ELEMENT) {
$isValid = $XMLReader->isValid();
if ($isValid) {
echo "YES ! this node is validated<br>";
}
}
}
?>
|
YES ! this node is validated
YES ! this node is validated
YES ! this node is validated
YES ! this node is validated
YES ! this node is validated
Reference: https://www.php.net/manual/en/xmlreader.setparserproperty.php
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