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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>The DOMDocument class</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="domcomment.construct.html">DOMComment::__construct</a></div> <div class="next" style="text-align: right; float: right;"><a href="domdocument.construct.html">DOMDocument::__construct</a></div> <div class="up"><a href="book.dom.html">DOM</a></div> <div class="home"><a href="index.html">PHP Manual</a></div></div><hr /><div> <h1 class="title">The DOMDocument class</h1> <div class="partintro"> <div id="domdocument.intro" class="section"> <h2 class="title">Introduction</h2> <p class="para"> Represents an entire HTML or XML document; serves as the root of the document tree. </p> </div> <div id="domdocument.synopsis" class="section"> <h2 class="title">Class synopsis</h2> <div class="classsynopsis"> <div class="ooclass"><b class="classname">DOMDocument</b></div> <div class="classsynopsisinfo"> <span class="ooclass"> <b class="classname">DOMDocument</b> </span> <span class="ooclass"> <span class="modifier">extends</span> <a href="class.domnode.html" class="classname">DOMNode</a> </span> {</div> <div class="classsynopsisinfo classsynopsisinfo_comment">/* Properties */</div> <div class="fieldsynopsis"> <span class="modifier">readonly</span> <span class="modifier">public</span> <span class="type">string</span> <var class="varname"><a href="class.domdocument.html#domdocument.props.actualencoding">$actualEncoding</a></var> ;</div> <div class="fieldsynopsis"> <span class="modifier">readonly</span> <span class="modifier">public</span> <span class="type"><span class="type DOMConfiguration">DOMConfiguration</span></span> <var class="varname"><a href="class.domdocument.html#domdocument.props.config">$config</a></var> ;</div> <div class="fieldsynopsis"> <span class="modifier">readonly</span> <span class="modifier">public</span> <span class="type"><a href="class.domdocumenttype.html" class="type DOMDocumentType">DOMDocumentType</a></span> <var class="varname"><a href="class.domdocument.html#domdocument.props.doctype">$doctype</a></var> ;</div> <div class="fieldsynopsis"> <span class="modifier">readonly</span> <span class="modifier">public</span> <span class="type"><a href="class.domelement.html" class="type DOMElement">DOMElement</a></span> <var class="varname"><a href="class.domdocument.html#domdocument.props.documentelement">$documentElement</a></var> ;</div> <div class="fieldsynopsis"> <span class="modifier">public</span> <span class="type">string</span> <var class="varname"><a href="class.domdocument.html#domdocument.props.documenturi">$documentURI</a></var> ;</div> <div class="fieldsynopsis"> <span class="modifier">public</span> <span class="type">string</span> <var class="varname"><a href="class.domdocument.html#domdocument.props.encoding">$encoding</a></var> ;</div> <div class="fieldsynopsis"> <span class="modifier">public</span> <span class="type">bool</span> <var class="varname"><a href="class.domdocument.html#domdocument.props.formatoutput">$formatOutput</a></var> ;</div> <div class="fieldsynopsis"> <span class="modifier">readonly</span> <span class="modifier">public</span> <span class="type"><a href="class.domimplementation.html" class="type DOMImplementation">DOMImplementation</a></span> <var class="varname"><a href="class.domdocument.html#domdocument.props.implementation">$implementation</a></var> ;</div> <div class="fieldsynopsis"> <span class="modifier">public</span> <span class="type">bool</span> <var class="varname"><a href="class.domdocument.html#domdocument.props.preservewhitespace">$preserveWhiteSpace</a></var> <span class="initializer">=true</span> ;</div> <div class="fieldsynopsis"> <span class="modifier">public</span> <span class="type">bool</span> <var class="varname"><a href="class.domdocument.html#domdocument.props.recover">$recover</a></var> ;</div> <div class="fieldsynopsis"> <span class="modifier">public</span> <span class="type">bool</span> <var class="varname"><a href="class.domdocument.html#domdocument.props.resolveexternals">$resolveExternals</a></var> ;</div> <div class="fieldsynopsis"> <span class="modifier">public</span> <span class="type">bool</span> <var class="varname"><a href="class.domdocument.html#domdocument.props.standalone">$standalone</a></var> ;</div> <div class="fieldsynopsis"> <span class="modifier">public</span> <span class="type">bool</span> <var class="varname"><a href="class.domdocument.html#domdocument.props.stricterrorchecking">$strictErrorChecking</a></var> <span class="initializer">=true</span> ;</div> <div class="fieldsynopsis"> <span class="modifier">public</span> <span class="type">bool</span> <var class="varname"><a href="class.domdocument.html#domdocument.props.substituteentities">$substituteEntities</a></var> ;</div> <div class="fieldsynopsis"> <span class="modifier">public</span> <span class="type">bool</span> <var class="varname"><a href="class.domdocument.html#domdocument.props.validateonparse">$validateOnParse</a></var> <span class="initializer">=false</span> ;</div> <div class="fieldsynopsis"> <span class="modifier">public</span> <span class="type">string</span> <var class="varname"><a href="class.domdocument.html#domdocument.props.version">$version</a></var> ;</div> <div class="fieldsynopsis"> <span class="modifier">readonly</span> <span class="modifier">public</span> <span class="type">string</span> <var class="varname"><a href="class.domdocument.html#domdocument.props.xmlencoding">$xmlEncoding</a></var> ;</div> <div class="fieldsynopsis"> <span class="modifier">public</span> <span class="type">bool</span> <var class="varname"><a href="class.domdocument.html#domdocument.props.xmlstandalone">$xmlStandalone</a></var> ;</div> <div class="fieldsynopsis"> <span class="modifier">public</span> <span class="type">string</span> <var class="varname"><a href="class.domdocument.html#domdocument.props.xmlversion">$xmlVersion</a></var> ;</div> <div class="classsynopsisinfo classsynopsisinfo_comment">/* Methods */</div> <div class="methodsynopsis dc-description"> <span class="methodname"><b><a href="domdocument.construct.html" class="function">DOMDocument::__construct</a></b></span> ([ <span class="methodparam"><span class="type">string</span> <tt class="parameter">$version</tt></span> [, <span class="methodparam"><span class="type">string</span> <tt class="parameter">$encoding</tt></span> ]] )</div><div class="methodsynopsis dc-description"> <span class="type">DOMAttr</span> <span class="methodname"><b><a href="domdocument.createattribute.html" class="function">DOMDocument::createAttribute</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$name</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">DOMAttr</span> <span class="methodname"><b><a href="domdocument.createattributens.html" class="function">DOMDocument::createAttributeNS</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$namespaceURI</tt></span> , <span class="methodparam"><span class="type">string</span> <tt class="parameter">$qualifiedName</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">DOMCDATASection</span> <span class="methodname"><b><a href="domdocument.createcdatasection.html" class="function">DOMDocument::createCDATASection</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$data</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">DOMComment</span> <span class="methodname"><b><a href="domdocument.createcomment.html" class="function">DOMDocument::createComment</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$data</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">DOMDocumentFragment</span> <span class="methodname"><b><a href="domdocument.createdocumentfragment.html" class="function">DOMDocument::createDocumentFragment</a></b></span> ( <span class="methodparam">void</span> )</div><div class="methodsynopsis dc-description"> <span class="type">DOMElement</span> <span class="methodname"><b><a href="domdocument.createelement.html" class="function">DOMDocument::createElement</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$name</tt></span> [, <span class="methodparam"><span class="type">string</span> <tt class="parameter">$value</tt></span> ] )</div><div class="methodsynopsis dc-description"> <span class="type">DOMElement</span> <span class="methodname"><b><a href="domdocument.createelementns.html" class="function">DOMDocument::createElementNS</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$namespaceURI</tt></span> , <span class="methodparam"><span class="type">string</span> <tt class="parameter">$qualifiedName</tt></span> [, <span class="methodparam"><span class="type">string</span> <tt class="parameter">$value</tt></span> ] )</div><div class="methodsynopsis dc-description"> <span class="type">DOMEntityReference</span> <span class="methodname"><b><a href="domdocument.createentityreference.html" class="function">DOMDocument::createEntityReference</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$name</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">DOMProcessingInstruction</span> <span class="methodname"><b><a href="domdocument.createprocessinginstruction.html" class="function">DOMDocument::createProcessingInstruction</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$target</tt></span> [, <span class="methodparam"><span class="type">string</span> <tt class="parameter">$data</tt></span> ] )</div><div class="methodsynopsis dc-description"> <span class="type">DOMText</span> <span class="methodname"><b><a href="domdocument.createtextnode.html" class="function">DOMDocument::createTextNode</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$content</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">DOMElement</span> <span class="methodname"><b><a href="domdocument.getelementbyid.html" class="function">DOMDocument::getElementById</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$elementId</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">DOMNodeList</span> <span class="methodname"><b><a href="domdocument.getelementsbytagname.html" class="function">DOMDocument::getElementsByTagName</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$name</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">DOMNodeList</span> <span class="methodname"><b><a href="domdocument.getelementsbytagnamens.html" class="function">DOMDocument::getElementsByTagNameNS</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$namespaceURI</tt></span> , <span class="methodparam"><span class="type">string</span> <tt class="parameter">$localName</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">DOMNode</span> <span class="methodname"><b><a href="domdocument.importnode.html" class="function">DOMDocument::importNode</a></b></span> ( <span class="methodparam"><span class="type"><a href="class.domnode.html" class="type DOMNode">DOMNode</a></span> <tt class="parameter">$importedNode</tt></span> [, <span class="methodparam"><span class="type">bool</span> <tt class="parameter">$deep</tt></span> ] )</div><div class="methodsynopsis dc-description"> <span class="type">mixed</span> <span class="methodname"><b><a href="domdocument.load.html" class="function">DOMDocument::load</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$filename</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$options</tt></span> ] )</div><div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><a href="domdocument.loadhtml.html" class="function">DOMDocument::loadHTML</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$source</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><a href="domdocument.loadhtmlfile.html" class="function">DOMDocument::loadHTMLFile</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$filename</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">mixed</span> <span class="methodname"><b><a href="domdocument.loadxml.html" class="function">DOMDocument::loadXML</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$source</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$options</tt></span> ] )</div><div class="methodsynopsis dc-description"> <span class="type">void</span> <span class="methodname"><b><a href="domdocument.normalizedocument.html" class="function">DOMDocument::normalizeDocument</a></b></span> ( <span class="methodparam">void</span> )</div><div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><a href="domdocument.registernodeclass.html" class="function">DOMDocument::registerNodeClass</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$baseclass</tt></span> , <span class="methodparam"><span class="type">string</span> <tt class="parameter">$extendedclass</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><a href="domdocument.relaxngvalidate.html" class="function">DOMDocument::relaxNGValidate</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$filename</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><a href="domdocument.relaxngvalidatesource.html" class="function">DOMDocument::relaxNGValidateSource</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$source</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">int</span> <span class="methodname"><b><a href="domdocument.save.html" class="function">DOMDocument::save</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$filename</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$options</tt></span> ] )</div><div class="methodsynopsis dc-description"> <span class="type">string</span> <span class="methodname"><b><a href="domdocument.savehtml.html" class="function">DOMDocument::saveHTML</a></b></span> ( <span class="methodparam">void</span> )</div><div class="methodsynopsis dc-description"> <span class="type">int</span> <span class="methodname"><b><a href="domdocument.savehtmlfile.html" class="function">DOMDocument::saveHTMLFile</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$filename</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">string</span> <span class="methodname"><b><a href="domdocument.savexml.html" class="function">DOMDocument::saveXML</a></b></span> ([ <span class="methodparam"><span class="type"><a href="class.domnode.html" class="type DOMNode">DOMNode</a></span> <tt class="parameter">$node</tt></span> [, <span class="methodparam"><span class="type">int</span> <tt class="parameter">$options</tt></span> ]] )</div><div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><a href="domdocument.schemavalidate.html" class="function">DOMDocument::schemaValidate</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$filename</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><a href="domdocument.schemavalidatesource.html" class="function">DOMDocument::schemaValidateSource</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$source</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><a href="domdocument.validate.html" class="function">DOMDocument::validate</a></b></span> ( <span class="methodparam">void</span> )</div><div class="methodsynopsis dc-description"> <span class="type">int</span> <span class="methodname"><b><a href="function.domdocument-xinclude.html" class="function">DOMDocument::xinclude</a></b></span> ([ <span class="methodparam"><span class="type">int</span> <tt class="parameter">$options</tt></span> ] )</div> <div class="classsynopsisinfo classsynopsisinfo_comment">/* Inherited methods */</div> <div class="methodsynopsis dc-description"> <span class="type">DOMNode</span> <span class="methodname"><b><a href="domnode.appendchild.html" class="function">DOMNode::appendChild</a></b></span> ( <span class="methodparam"><span class="type"><a href="class.domnode.html" class="type DOMNode">DOMNode</a></span> <tt class="parameter">$newnode</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">DOMNode</span> <span class="methodname"><b><a href="domnode.clonenode.html" class="function">DOMNode::cloneNode</a></b></span> ([ <span class="methodparam"><span class="type">bool</span> <tt class="parameter">$deep</tt></span> ] )</div><div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><a href="domnode.hasattributes.html" class="function">DOMNode::hasAttributes</a></b></span> ( <span class="methodparam">void</span> )</div><div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><a href="domnode.haschildnodes.html" class="function">DOMNode::hasChildNodes</a></b></span> ( <span class="methodparam">void</span> )</div><div class="methodsynopsis dc-description"> <span class="type">DOMNode</span> <span class="methodname"><b><a href="domnode.insertbefore.html" class="function">DOMNode::insertBefore</a></b></span> ( <span class="methodparam"><span class="type"><a href="class.domnode.html" class="type DOMNode">DOMNode</a></span> <tt class="parameter">$newnode</tt></span> [, <span class="methodparam"><span class="type"><a href="class.domnode.html" class="type DOMNode">DOMNode</a></span> <tt class="parameter">$refnode</tt></span> ] )</div><div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><a href="domnode.isdefaultnamespace.html" class="function">DOMNode::isDefaultNamespace</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$namespaceURI</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><a href="domnode.issamenode.html" class="function">DOMNode::isSameNode</a></b></span> ( <span class="methodparam"><span class="type"><a href="class.domnode.html" class="type DOMNode">DOMNode</a></span> <tt class="parameter">$node</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">bool</span> <span class="methodname"><b><a href="domnode.issupported.html" class="function">DOMNode::isSupported</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$feature</tt></span> , <span class="methodparam"><span class="type">string</span> <tt class="parameter">$version</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">string</span> <span class="methodname"><b><a href="domnode.lookupnamespaceuri.html" class="function">DOMNode::lookupNamespaceURI</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$prefix</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">string</span> <span class="methodname"><b><a href="domnode.lookupprefix.html" class="function">DOMNode::lookupPrefix</a></b></span> ( <span class="methodparam"><span class="type">string</span> <tt class="parameter">$namespaceURI</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">void</span> <span class="methodname"><b><a href="domnode.normalize.html" class="function">DOMNode::normalize</a></b></span> ( <span class="methodparam">void</span> )</div><div class="methodsynopsis dc-description"> <span class="type">DOMNode</span> <span class="methodname"><b><a href="domnode.removechild.html" class="function">DOMNode::removeChild</a></b></span> ( <span class="methodparam"><span class="type"><a href="class.domnode.html" class="type DOMNode">DOMNode</a></span> <tt class="parameter">$oldnode</tt></span> )</div><div class="methodsynopsis dc-description"> <span class="type">DOMNode</span> <span class="methodname"><b><a href="domnode.replacechild.html" class="function">DOMNode::replaceChild</a></b></span> ( <span class="methodparam"><span class="type"><a href="class.domnode.html" class="type DOMNode">DOMNode</a></span> <tt class="parameter">$newnode</tt></span> , <span class="methodparam"><span class="type"><a href="class.domnode.html" class="type DOMNode">DOMNode</a></span> <tt class="parameter">$oldnode</tt></span> )</div> }</div> </div> <div id="domdocument.props" class="section"> <h2 class="title">Properties</h2> <dl> <dt id="domdocument.props.actualencoding"> <span class="term"><var class="varname">actualEncoding</var></span> <dd> <p class="para"> <em class="emphasis">Deprecated</em>. Actual encoding of the document, is a readonly equivalent to <var class="varname">encoding</var>. </p> </dd> </dt> <dt id="domdocument.props.config"> <span class="term"><var class="varname">config</var></span> <dd> <p class="para"> <em class="emphasis">Deprecated</em>. Configuration used when <a href="domdocument.normalizedocument.html" class="function">DOMDocument::normalizeDocument()</a> is invoked. </p> </dd> </dt> <dt id="domdocument.props.doctype"> <span class="term"><var class="varname">doctype</var></span>⌨️ 快捷键说明
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