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PHP : Function Reference : DOM Functions : DOMImplementation->hasFeature()

DOMImplementation->hasFeature()

Test if the DOM implementation implements a specific feature ()

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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 538. Testing your DOM Implementation

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<?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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