(PHP 5, PHP 7, PHP 8)
DOMImplementation::hasFeature — Test if the DOM implementation implements a specific feature
$feature
, string $version
): bool
Test if the DOM implementation implements a specific
feature
.
You can find a list of all features in the » Conformance section of the DOM specification.
feature
The feature to test.
version
The version number of the feature
to test. In
level 2, this can be either 2.0
or
1.0
.
Returns true
on success or false
on failure.
Version | Description |
---|---|
8.0.0 |
Calling this function statically will
now throw an Error.
Previously, an E_DEPRECATED was raised.
|
Example #1 Testing your DOM Implementation
<?php$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'); foreach ($features as $key => $name) { if (DOMImplementation::hasFeature($key, '2.0')) { echo "Has feature $name\n"; } else { echo "Missing feature $name\n"; }}?>