DOMImplementation::hasFeature
(PHP 5, PHP 7, PHP 8)
DOMImplementation::hasFeature — Test if the DOM implementation implements a specific feature
Descrição
public DOMImplementation::hasFeature
( string
$feature
, string $version
) : bool
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.
Parâmetros
-
feature -
The feature to test.
-
version -
The version number of the
featureto test. In level 2, this can be either2.0or1.0.
Valor Retornado
Retorna true em caso de sucesso ou false em caso de falha.
Erros
This method may be called statically, but will issue an E_STRICT error.
Exemplos
Exemplo #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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