DOMImplementation::hasFeature
(PHP 5)
DOMImplementation::hasFeature — Test if the DOM implementation implements a specific feature
Descrizione
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.
Elenco dei parametri
-
feature -
The feature to test.
-
version -
The version number of the
featureto test. In level 2, this can be either 2.0 or 1.0.
Valori restituiti
Restituisce TRUE in caso di successo, FALSE in caso di fallimento.
Errori/Eccezioni
Questo metodo può essere chiamato in modo statico, ma genererà un errore E_STRICT.
Esempi
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";
}
}
?>
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