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# DOMImplementation->hasFeature()

(no version information, might be only in CVS)

DOMImplementation->hasFeature() -- Test if the DOM implementation implements a specific feature

## Description

class DOMImplementation {
bool 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.

## Return Values

Returns `TRUE` on success or `FALSE` on failure.

## Examples

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"; } } ?>`

## See Also

DOMNode->isSupported()

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