📄 domimplementation.hasfeature.html
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title>Test if the DOM implementation implements a specific feature</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> </head> <body><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="class.domimplementation.html">DOMImplementation</a></div> <div class="next" style="text-align: right; float: right;"><a href="class.domnamednodemap.html">DOMNamedNodeMap</a></div> <div class="up"><a href="class.domimplementation.html">DOMImplementation</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div id="domimplementation.hasfeature" class="refentry"> <div class="refnamediv"> <h1 class="refname">DOMImplementation::hasFeature</h1> <p class="verinfo">(No version information available, might be only in CVS)</p><p class="refpurpose"><span class="refname">DOMImplementation::hasFeature</span> — <span class="dc-title"> Test if the DOM implementation implements a specific feature </span></p> </div> <div class="refsect1 description"> <h3 class="title">Description</h3> <div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><b>DOMImplementation::hasFeature</b></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$feature</tt></span> , <span class="methodparam"><span class="type">string</span> <tt class="parameter">$version</tt></span> )</div> <p class="para rdfs-comment"> Test if the DOM implementation implements a specific <i><tt class="parameter">feature</tt></i>. </p> <p class="para"> You can find a list of all features in the <a href="http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/introduction.html#ID-Conformance" class="link external">» Conformance</a> section of the DOM specification. </p> </div> <div class="refsect1 parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt> <span class="term"><i><tt class="parameter">feature</tt></i></span> <dd> <p class="para"> The feature to test. </p> </dd> </dt> <dt> <span class="term"><i><tt class="parameter">version</tt></i></span> <dd> <p class="para"> The version number of the <i><tt class="parameter">feature</tt></i> to test. In level 2, this can be either <i>2.0</i> or <i>1.0</i>. </p> </dd> </dt> </dl> </p> </div> <div class="refsect1 returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns <b><tt>TRUE</tt></b> on success or <b><tt>FALSE</tt></b> on failure. </p> </div> <div class="refsect1 examples"> <h3 class="title">Examples</h3> <div class="example"> <p><b>Example #1 Testing your DOM Implementation</b></p> <div class="example-contents"><div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br /><br />$features </span><span style="color: #007700">= array(<br /> </span><span style="color: #DD0000">'Core' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'Core module'</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'XML' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'XML module'</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'HTML' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'HTML module'</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'Views' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'Views module'</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'Stylesheets' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'Style Sheets module'</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'CSS' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'CSS module'</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'CSS2' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'CSS2 module'</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'Events' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'Events module'</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'UIEvents' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'User interface Events module'</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'MouseEvents' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'Mouse Events module'</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'MutationEvents' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'Mutation Events module'</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'HTMLEvents' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'HTML Events module'</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'Range' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'Range module'</span><span style="color: #007700">,<br /> </span><span style="color: #DD0000">'Traversal' </span><span style="color: #007700">=> </span><span style="color: #DD0000">'Traversal module'<br /></span><span style="color: #007700">);<br /> <br />foreach (</span><span style="color: #0000BB">$features </span><span style="color: #007700">as </span><span style="color: #0000BB">$key </span><span style="color: #007700">=> </span><span style="color: #0000BB">$name</span><span style="color: #007700">) {<br /> if (</span><span style="color: #0000BB">DOMImplementation</span><span style="color: #007700">::</span><span style="color: #0000BB">hasFeature</span><span style="color: #007700">(</span><span style="color: #0000BB">$key</span><span style="color: #007700">, </span><span style="color: #DD0000">'2.0'</span><span style="color: #007700">)) {<br /> echo </span><span style="color: #DD0000">"Has feature $name\n"</span><span style="color: #007700">;<br /> } else {<br /> echo </span><span style="color: #DD0000">"Missing feature $name\n"</span><span style="color: #007700">;<br /> }<br />}<br /><br /></span><span style="color: #0000BB">?></span></span></code></div> </div> </div> </div> <div class="refsect1 seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li class="member"><a href="domnode.issupported.html" class="xref">DOMNode::isSupported</a></li> </ul> </p> </div></div><hr /><div style="text-align: center;"> <div class="prev" style="text-align: left; float: left;"><a href="class.domimplementation.html">DOMImplementation</a></div> <div class="next" style="text-align: right; float: right;"><a href="class.domnamednodemap.html">DOMNamedNodeMap</a></div> <div class="up"><a href="class.domimplementation.html">DOMImplementation</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div></body></html>⌨️ 快捷键说明
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