(PHP 5, PHP 7, PHP 8)
DOMImplementation::hasFeature β Test if the DOM implementation implements a specific feature
Test if the DOM implementation implements a specific
feature.
You can find a list of all features in the Β» Conformance section of the DOM specification.
featureThe feature to test.
version
The version number of the feature to test. In
level 2, this can be either 2.0 or
1.0.
| Version | Description |
|---|---|
| 8.0.0 |
Calling this function statically will
now throw an Error.
Previously, an E_DEPRECATED was raised.
|
Example #1 Testing your DOM Implementation
<?php
$features = array(
'Core' => 'Core module',
'XML' => 'XML module',
'HTML' => 'HTML module',
'Views' => 'Views module',
'Stylesheets' => 'Style Sheets module',
'CSS' => 'CSS module',
'CSS2' => 'CSS2 module',
'Events' => 'Events module',
'UIEvents' => 'User interface Events module',
'MouseEvents' => 'Mouse Events module',
'MutationEvents' => 'Mutation Events module',
'HTMLEvents' => 'HTML Events module',
'Range' => 'Range module',
'Traversal' => 'Traversal module'
);
$implementation = new DOMImplementation;
foreach ($features as $key => $name) {
if ($implementation->hasFeature($key, '2.0')) {
echo "Has feature $name\n";
} else {
echo "Missing feature $name\n";
}
}
?>