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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
说明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.
参数
- 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.
返回值
如果成功则返回 TRUE，失败则返回 FALSE。
范例例子 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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