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?>
<div id="function.tmpfile" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">tmpfile</h1>
  <p class="verinfo">(PHP 4, PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">tmpfile</span> &mdash; <span class="dc-title">建立一个临时文件</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-function.tmpfile-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>tmpfile</strong></span>(): <span class="type"><span class="type"><a href="language.types.resource.php" class="type resource">resource</a></span>|<span class="type"><a href="language.types.singleton.php" class="type false">false</a></span></span></div>

  <p class="para rdfs-comment">
   以读写二进制（w+b）模式创建一个具有唯一文件名的临时文件，然后返回该文件的句柄。
  </p>
  <p class="para">
   文件在关闭后（例如，调用 <span class="function"><a href="function.fclose.php" class="function">fclose()</a></span> 或 <span class="function"><strong>tmpfile()</strong></span>
   返回的文件句柄已无引用的情况）或脚本运行结束后，会自动删除。
  </p>
  <div class="caution"><strong class="caution">警告</strong>
   <p class="simpara">
    如果脚本运行被意外终止，可能不会删除该临时文件。
   </p>
  </div>
 </div>


 <div class="refsect1 parameters" id="refsect1-function.tmpfile-parameters">
  <h3 class="title">参数</h3>
  <p class="para">此函数没有参数。</p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.tmpfile-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   返回新文件的句柄，类似于 <span class="function"><a href="function.fopen.php" class="function">fopen()</a></span> 返回的文件句柄， 或者在失败时返回 <strong><code><a href="reserved.constants.php#constant.false">false</a></code></strong>。
  </p>
 </div>


 <div class="refsect1 examples" id="refsect1-function.tmpfile-examples">
  <h3 class="title">示例</h3>
  <p class="para">
   <div class="example" id="example-1">
    <p><strong>示例 #1 <span class="function"><strong>tmpfile()</strong></span> 例子</strong></p>
    <div class="example-contents">
<div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br />$temp </span><span style="color: #007700">= </span><span style="color: #0000BB">tmpfile</span><span style="color: #007700">();<br /></span><span style="color: #0000BB">fwrite</span><span style="color: #007700">(</span><span style="color: #0000BB">$temp</span><span style="color: #007700">, </span><span style="color: #DD0000">"writing to tempfile"</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">fseek</span><span style="color: #007700">(</span><span style="color: #0000BB">$temp</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">);<br />echo </span><span style="color: #0000BB">fread</span><span style="color: #007700">(</span><span style="color: #0000BB">$temp</span><span style="color: #007700">, </span><span style="color: #0000BB">1024</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">fclose</span><span style="color: #007700">(</span><span style="color: #0000BB">$temp</span><span style="color: #007700">); </span><span style="color: #FF8000">// this removes the file<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="examplescode"><pre class="examplescode">writing to tempfile</pre>
</div>
    </div>
   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.tmpfile-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li><span class="function"><a href="function.tempnam.php" class="function" rel="rdfs-seeAlso">tempnam()</a> - 建立一个具有唯一文件名的文件</span></li>
    <li><span class="function"><a href="function.sys-get-temp-dir.php" class="function" rel="rdfs-seeAlso">sys_get_temp_dir()</a> - 返回用于临时文件的目录</span></li>
   </ul>
  </p>
 </div>


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