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<div id="dom-attr.rename" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">Dom\Attr::rename</h1>
  <p class="verinfo">(PHP 8 &gt;= 8.4.0)</p><p class="refpurpose"><span class="refname">Dom\Attr::rename</span> &mdash; <span class="dc-title">Changes the qualified name or namespace of an attribute</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-dom-attr.rename-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><strong>Dom\Attr::rename</strong></span>(<span class="methodparam"><span class="type"><span class="type"><a href="language.types.null.php" class="type null">?</a></span><span class="type"><a href="language.types.string.php" class="type string">string</a></span></span> <code class="parameter">$namespaceURI</code></span>, <span class="methodparam"><span class="type"><a href="language.types.string.php" class="type string">string</a></span> <code class="parameter">$qualifiedName</code></span>): <span class="type"><a href="language.types.void.php" class="type void">void</a></span></div>

  <p class="simpara">
   This method changes the qualified name or namespace of an attribute.
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-dom-attr.rename-parameters">
  <h3 class="title">参数</h3>
  <dl>
   
    <dt><code class="parameter">namespaceURI</code></dt>
    <dd>
     <span class="simpara">
      The new namespace <abbr title="Uniform Resource Identifier">URI</abbr> of the attribute.
     </span>
    </dd>
   
   
    <dt><code class="parameter">qualifiedName</code></dt>
    <dd>
     <span class="simpara">
      The new qualified name of the attribute.
     </span>
    </dd>
   
  </dl>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-dom-attr.rename-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="simpara">
   没有返回值。
  </p>
 </div>


 <div class="refsect1 errors" id="refsect1-dom-attr.rename-errors">
  <h3 class="title">错误／异常</h3>
  <dl>
   
    <dt><span class="classname"><a href="class.domexception.php" class="classname">DOMException</a></span> with code <strong><code><a href="dom.constants.php#constant.dom-namespace-err">Dom\NAMESPACE_ERR</a></code></strong></dt>
    <dd>
     <span class="simpara">
      Raised if there is an error with the namespace, as determined by
      <code class="parameter">qualifiedName</code>.
     </span>
    </dd>
   
   
    <dt><span class="classname"><a href="class.domexception.php" class="classname">DOMException</a></span> with code <strong><code><a href="dom.constants.php#constant.dom-invalid-modification-err">Dom\INVALID_MODIFICATION_ERR</a></code></strong></dt>
    <dd>
     <span class="simpara">
      Raised if there already exists an attribute in the element with the same
      qualified name.
     </span>
    </dd>
   
  </dl>
 </div>


 <div class="refsect1 examples" id="refsect1-dom-attr.rename-examples">
  <h3 class="title">示例</h3>
  <div class="example" id="dom-attr.rename.example.basic">
   <p><strong>示例 #1 <span class="methodname"><strong>Dom\Attr::rename()</strong></span> example to change both the namespace and qualified name</strong></p>
   <div class="example-contents"><p>
    This changes the qualified name of <code class="literal">my-attr</code> to
    <code class="literal">my-new-attr</code> and also changes its namespace to
    <code class="literal">urn:my-ns</code>.
   </p></div>
   <div class="example-contents">
<div class="annotation-interactive phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br /><br />$doc </span><span style="color: #007700">= </span><span style="color: #0000BB">Dom\XMLDocument</span><span style="color: #007700">::</span><span style="color: #0000BB">createFromString</span><span style="color: #007700">(</span><span style="color: #DD0000">'&lt;root my-attr="value"/&gt;'</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$root </span><span style="color: #007700">= </span><span style="color: #0000BB">$doc</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">documentElement</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$attribute </span><span style="color: #007700">= </span><span style="color: #0000BB">$root</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">attributes</span><span style="color: #007700">[</span><span style="color: #DD0000">'my-attr'</span><span style="color: #007700">];<br /></span><span style="color: #0000BB">$attribute</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">rename</span><span style="color: #007700">(</span><span style="color: #DD0000">'urn:my-ns'</span><span style="color: #007700">, </span><span style="color: #DD0000">'my-new-attr'</span><span style="color: #007700">);<br /><br />echo </span><span style="color: #0000BB">$doc</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">saveXml</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
   </div>

   <div class="example-contents"><p>以上示例会输出：</p></div>
   <div class="example-contents screen">
<div class="annotation-interactive examplescode"><pre class="examplescode">&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
&lt;root xmlns:ns1=&quot;urn:my-ns&quot; ns1:my-new-attr=&quot;value&quot;/&gt;</pre>
</div>
   </div>
  </div>
  <div class="example" id="dom-attr.rename.example.only-name">
   <p><strong>示例 #2 <span class="methodname"><strong>Dom\Attr::rename()</strong></span> example to change only the qualified name</strong></p>
   <div class="example-contents"><p>
    This only changes the qualified name of <code class="literal">my-attr</code>
    and keeps the namespace <abbr title="Uniform Resource Identifier">URI</abbr> the same.
   </p></div>
   <div class="example-contents">
<div class="annotation-interactive phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br /><br />$doc </span><span style="color: #007700">= </span><span style="color: #0000BB">Dom\XMLDocument</span><span style="color: #007700">::</span><span style="color: #0000BB">createFromString</span><span style="color: #007700">(</span><span style="color: #DD0000">'&lt;root my-attr="value"/&gt;'</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">$root </span><span style="color: #007700">= </span><span style="color: #0000BB">$doc</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">documentElement</span><span style="color: #007700">;<br /></span><span style="color: #0000BB">$attribute </span><span style="color: #007700">= </span><span style="color: #0000BB">$root</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">attributes</span><span style="color: #007700">[</span><span style="color: #DD0000">'my-attr'</span><span style="color: #007700">];<br /></span><span style="color: #0000BB">$attribute</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">rename</span><span style="color: #007700">(</span><span style="color: #0000BB">$attribute</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">namespaceURI</span><span style="color: #007700">, </span><span style="color: #DD0000">'my-new-attr'</span><span style="color: #007700">);<br /><br />echo </span><span style="color: #0000BB">$doc</span><span style="color: #007700">-&gt;</span><span style="color: #0000BB">saveXml</span><span style="color: #007700">();<br /><br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
   </div>

   <div class="example-contents"><p>以上示例会输出：</p></div>
   <div class="example-contents screen">
<div class="annotation-interactive examplescode"><pre class="examplescode">&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
&lt;root my-new-attr=&quot;value&quot;/&gt;</pre>
</div>
   </div>
  </div>
 </div>


 <div class="refsect1 notes" id="refsect1-dom-attr.rename-notes">
  <h3 class="title">注释</h3>
  <blockquote class="note"><p><strong class="note">注意</strong>: 
   <span class="simpara">
    It is sometimes necessary to change the qualified name and namespace
    <abbr title="Uniform Resource Identifier">URI</abbr> together in one step to not break any
    namespace rules.
   </span>
  </p></blockquote>
 </div>


 <div class="refsect1 seealso" id="refsect1-dom-attr.rename-seealso">
  <h3 class="title">参见</h3>
  <ul class="simplelist">
   <li><span class="methodname"><strong>Dom\Element::rename()</strong></span></li>
  </ul>
 </div>


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