<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >DOMImplementation->hasFeature()</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REL="HOME" TITLE="PHP 手册" HREF="index.html"><LINK REL="UP" TITLE="DOM Functions" HREF="ref.dom.html"><LINK REL="PREVIOUS" TITLE="DOMImplementation->createDocumentType()" HREF="function.dom-domimplementation-createdocumenttype.html"><LINK REL="NEXT" TITLE="DOMNamedNodeMap->getNamedItem()" HREF="function.dom-domnamednodemap-getnameditem.html"><META HTTP-EQUIV="Content-type" CONTENT="text/html; charset=UTF-8"></HEAD ><BODY CLASS="refentry" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >PHP 手册</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="function.dom-domimplementation-createdocumenttype.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="function.dom-domnamednodemap-getnameditem.html" ACCESSKEY="N" >下一页</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="function.dom-domimplementation-hasfeature" ></A >DOMImplementation->hasFeature()</H1 ><DIV CLASS="refnamediv" ><A NAME="AEN41689" ></A ><P > (no version information, might be only in CVS)</P >DOMImplementation->hasFeature() -- Test if the DOM implementation implements a specific feature </DIV ><DIV CLASS="refsect1" ><A NAME="AEN41692" ></A ><H2 >说明</H2 >class <B CLASS="classname" >DOMImplementation</B > { <BR ></BR >bool <B CLASS="methodname" >hasFeature</B > ( string feature, string version )<BR ></BR >}<P > Test if the DOM implementation implements a specific <CODE CLASS="parameter" >feature</CODE >. </P ><P > 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" TARGET="_top" >Conformance</A > section of the DOM specification. </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN41710" ></A ><H2 >参数</H2 ><P > <P ></P ><DIV CLASS="variablelist" ><DL ><DT ><CODE CLASS="parameter" >feature</CODE ></DT ><DD ><P > The feature to test. </P ></DD ><DT ><CODE CLASS="parameter" >version</CODE ></DT ><DD ><P > The version number of the <CODE CLASS="parameter" >feature</CODE > to test. In level 2, this can be either <TT CLASS="literal" >2.0</TT > or <TT CLASS="literal" >1.0</TT >. </P ></DD ></DL ></DIV > </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN41727" ></A ><H2 >返回值</H2 ><P > 如果成功则返回 <TT CLASS="constant" ><B >TRUE</B ></TT >,失败则返回 <TT CLASS="constant" ><B >FALSE</B ></TT >。 </P ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN41732" ></A ><H2 >范例</H2 ><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" CLASS="EXAMPLE" ><TR ><TD ><DIV CLASS="example" ><A NAME="AEN41734" ></A ><P ><B >例 1. Testing your DOM Implementation</B ></P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" CELLPADDING="5" ><TR ><TD ><code><font color="#000000"> <font color="#0000BB"><?php<br /><br />$features </font><font color="#007700">= array(<br /> </font><font color="#DD0000">'Core' </font><font color="#007700">=> </font><font color="#DD0000">'Core module'</font><font color="#007700">,<br /> </font><font color="#DD0000">'XML' </font><font color="#007700">=> </font><font color="#DD0000">'XML module'</font><font color="#007700">,<br /> </font><font color="#DD0000">'HTML' </font><font color="#007700">=> </font><font color="#DD0000">'HTML module'</font><font color="#007700">,<br /> </font><font color="#DD0000">'Views' </font><font color="#007700">=> </font><font color="#DD0000">'Views module'</font><font color="#007700">,<br /> </font><font color="#DD0000">'Stylesheets' </font><font color="#007700">=> </font><font color="#DD0000">'Style Sheets module'</font><font color="#007700">,<br /> </font><font color="#DD0000">'CSS' </font><font color="#007700">=> </font><font color="#DD0000">'CSS module'</font><font color="#007700">,<br /> </font><font color="#DD0000">'CSS2' </font><font color="#007700">=> </font><font color="#DD0000">'CSS2 module'</font><font color="#007700">,<br /> </font><font color="#DD0000">'Events' </font><font color="#007700">=> </font><font color="#DD0000">'Events module'</font><font color="#007700">,<br /> </font><font color="#DD0000">'UIEvents' </font><font color="#007700">=> </font><font color="#DD0000">'User interface Events module'</font><font color="#007700">,<br /> </font><font color="#DD0000">'MouseEvents' </font><font color="#007700">=> </font><font color="#DD0000">'Mouse Events module'</font><font color="#007700">,<br /> </font><font color="#DD0000">'MutationEvents' </font><font color="#007700">=> </font><font color="#DD0000">'Mutation Events module'</font><font color="#007700">,<br /> </font><font color="#DD0000">'HTMLEvents' </font><font color="#007700">=> </font><font color="#DD0000">'HTML Events module'</font><font color="#007700">,<br /> </font><font color="#DD0000">'Range' </font><font color="#007700">=> </font><font color="#DD0000">'Range module'</font><font color="#007700">,<br /> </font><font color="#DD0000">'Traversal' </font><font color="#007700">=> </font><font color="#DD0000">'Traversal module'<br /></font><font color="#007700">);<br /> <br />foreach (</font><font color="#0000BB">$features </font><font color="#007700">as </font><font color="#0000BB">$key </font><font color="#007700">=> </font><font color="#0000BB">$name</font><font color="#007700">) {<br /> if (</font><font color="#0000BB">DOMImplementation</font><font color="#007700">::</font><font color="#0000BB">hasFeature</font><font color="#007700">(</font><font color="#0000BB">$key</font><font color="#007700">, </font><font color="#DD0000">'2.0'</font><font color="#007700">)) {<br /> echo </font><font color="#DD0000">"Has feature $name</font><font color="#007700">\n</font><font color="#DD0000">"</font><font color="#007700">;<br /> } else {<br /> echo </font><font color="#DD0000">"Missing feature $name</font><font color="#007700">\n</font><font color="#DD0000">"</font><font color="#007700">;<br /> }<br />}<br /><br /></font><font color="#0000BB">?></font> </font> </code></TD ></TR ></TABLE ></DIV ></TD ></TR ></TABLE ></DIV ><DIV CLASS="refsect1" ><A NAME="AEN41737" ></A ><H2 >参见</H2 ><P > <P ></P ><TABLE BORDER="0" ><TBODY ><TR ><TD ><A HREF="function.dom-domnode-issupported.html" >DOMNode->isSupported()</A ></TD ></TR ></TBODY ></TABLE ><P ></P > </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="function.dom-domimplementation-createdocumenttype.html" ACCESSKEY="P" >上一页</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >起始页</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="function.dom-domnamednodemap-getnameditem.html" ACCESSKEY="N" >下一页</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >DOMImplementation->createDocumentType()</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="ref.dom.html" ACCESSKEY="U" >上一级</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >DOMNamedNodeMap->getNamedItem()</TD ></TR ></TABLE ></DIV ></BODY ></HTML >