(PHP 5)
DOMImplementation::hasFeature — 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 » Conformance section of the DOM specification.
The feature to test.
The version number of the feature to test. In level 2, this can be either 2.0 or 1.0.
成功时返回 TRUE， 或者在失败时返回 FALSE.
This method may be called statically, but will issue an E_STRICT error.
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";
}
}
?>