(PHP 5, PHP 7)
Test if the DOM implementation implements a specific feature
public bool DOMImplementation::hasFeature ( string $feature, string $version )
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.
Parameters:
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:
Returns TRUE
on success or FALSE
on failure.
Exception:
This method may be called statically, but will issue an E_STRICT
error.
Examples:
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"; } } ?>
See also:
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