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<div id="function.array-multisort" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">array_multisort</h1>
  <p class="verinfo">(PHP 4, PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">array_multisort</span> &mdash; <span class="dc-title">对多个数组或多维数组进行排序</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-function.array-multisort-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="methodname"><strong>array_multisort</strong></span>(<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="type"><a href="language.types.array.php" class="type array">array</a></span> <code class="parameter reference">&$array1</code></span>,<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="type"><a href="language.types.mixed.php" class="type mixed">mixed</a></span> <code class="parameter">$array1_sort_order</code><span class="initializer"> = SORT_ASC</span></span>,<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="type"><a href="language.types.mixed.php" class="type mixed">mixed</a></span> <code class="parameter">$array1_sort_flags</code><span class="initializer"> = SORT_REGULAR</span></span>,<br>&nbsp;&nbsp;&nbsp;&nbsp;<span class="methodparam"><span class="type"><a href="language.types.mixed.php" class="type mixed">mixed</a></span> <code class="parameter">...$rest</code></span><br>): <span class="type"><a href="language.types.singleton.php" class="type true">true</a></span></div>

  <p class="para rdfs-comment">
   <span class="function"><strong>array_multisort()</strong></span>
   可以用来一次对多个数组进行排序，或者根据某一维或多维对多维数组进行排序。
  </p>
  <p class="para">
   关联（<span class="type"><a href="language.types.string.php" class="type string">string</a></span>）键名保持不变，但数字键名会被重新索引。
  </p>
  <blockquote class="note"><p><strong class="note">注意</strong>: 
 <p class="para">
  如果两个成员完全相同，那么它们将保持原来的顺序。
  在 PHP 8.0.0 之前，它们在排序数组中的相对顺序是未定义的。
 </p>
</p></blockquote>

 </div>

 
 <div class="refsect1 parameters" id="refsect1-function.array-multisort-parameters">
  <h3 class="title">参数</h3>
  <blockquote class="note"><p><strong class="note">注意</strong>: 
 <p class="para">
    重置数组中的内部指针，指向第一个元素。
 </p>
</p></blockquote>

  <p class="para">
   <dl>
    
     <dt><code class="parameter">array1</code></dt>
     <dd>
      <p class="para">
       要排序的 <span class="type"><a href="language.types.array.php" class="type array">array</a></span>。
      </p>
     </dd>
    
    
     <dt><code class="parameter">array1_sort_order</code></dt>
     <dd>
      <p class="para">
       之前 <span class="type"><a href="language.types.array.php" class="type array">array</a></span>  参数要排列的顺序。
       <strong><code><a href="array.constants.php#constant.sort-asc">SORT_ASC</a></code></strong> 按照上升顺序排序， <strong><code><a href="array.constants.php#constant.sort-desc">SORT_DESC</a></code></strong> 按照下降顺序排序。
      </p>
      <p class="para">
       此参数可以和 <code class="parameter">array1_sort_flags</code> 互换，也可以完全删除，默认是 <strong><code><a href="array.constants.php#constant.sort-asc">SORT_ASC</a></code></strong> 。
      </p>
     </dd>
    
    
     <dt><code class="parameter">array1_sort_flags</code></dt>
     <dd>
      <p class="para">
       为 <span class="type"><a href="language.types.array.php" class="type array">array</a></span> 参数设定选项：
      </p>
      <p class="para">
       排序类型标志：
       <ul class="itemizedlist">
        <li class="listitem">
         <span class="simpara"><strong><code><a href="array.constants.php#constant.sort-regular">SORT_REGULAR</a></code></strong> - 
          将项目按照通常方法比较（不修改类型）
         </span>
        </li>
        <li class="listitem">
         <span class="simpara"><strong><code><a href="array.constants.php#constant.sort-numeric">SORT_NUMERIC</a></code></strong> - 按照数字大小比较</span>
        </li>
        <li class="listitem">
         <span class="simpara"><strong><code><a href="array.constants.php#constant.sort-string">SORT_STRING</a></code></strong> -  按照字符串比较</span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="array.constants.php#constant.sort-locale-string">SORT_LOCALE_STRING</a></code></strong> -  根据当前的本地化设置，按照字符串比较。 
          它会使用 locale 信息，可以通过 <span class="function"><a href="function.setlocale.php" class="function">setlocale()</a></span> 修改此信息。
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="array.constants.php#constant.sort-natural">SORT_NATURAL</a></code></strong> - 以字符串的&quot;自然排序&quot;，类似 <span class="function"><a href="function.natsort.php" class="function">natsort()</a></span>
         </span>
        </li>
        <li class="listitem">
         <span class="simpara">
          <strong><code><a href="array.constants.php#constant.sort-flag-case">SORT_FLAG_CASE</a></code></strong> - 可以组合
          (按位或 OR) 
          <strong><code><a href="array.constants.php#constant.sort-string">SORT_STRING</a></code></strong> 或者
          <strong><code><a href="array.constants.php#constant.sort-natural">SORT_NATURAL</a></code></strong> 大小写不敏感的方式排序字符串。
         </span>
        </li>
       </ul>
      </p>
      <p class="para">
       参数可以和 <code class="parameter">array1_sort_order</code> 交换或者省略，默认情况下是 <strong><code><a href="array.constants.php#constant.sort-regular">SORT_REGULAR</a></code></strong>。
      </p>
     </dd>
    
    
     <dt><code class="parameter">rest</code></dt>
     <dd>
      <p class="para">
       可选的选项，可提供更多数组，跟随在 sort order 和 sort flag 之后。
       提供的数组和之前的数组要有相同数量的元素。
       换言之，排序是按字典顺序排列的。
      </p>
     </dd>
    
   </dl>
  </p>
 </div>


 <div class="refsect1 returnvalues" id="refsect1-function.array-multisort-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   总是返回 <strong><code><a href="reserved.constants.php#constant.true">true</a></code></strong>。
  </p>
 </div>


 <div class="refsect1 changelog" id="refsect1-function.array-multisort-changelog">
  <h3 class="title">更新日志</h3>
  <table class="doctable informaltable">
   
    <thead>
     <tr>
      <th>版本</th>
      <th>说明</th>
     </tr>

    </thead>

    <tbody class="tbody">
     <tr>
      <td>8.5.0</td>
      <td>
       返回类型现在是 <strong><code><a href="reserved.constants.php#constant.true">true</a></code></strong>；之前是 <span class="type"><a href="language.types.boolean.php" class="type bool">bool</a></span>。
      </td>
     </tr>

    </tbody>
   
  </table>

 </div>


 <div class="refsect1 examples" id="refsect1-function.array-multisort-examples">
  <h3 class="title">示例</h3>
  <p class="para">
   <div class="example" id="example-1">
    <p><strong>示例 #1 多个数组排序</strong></p>
    <div class="example-contents">
<div class="annotation-interactive phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br />$ar1 </span><span style="color: #007700">= array(</span><span style="color: #0000BB">10</span><span style="color: #007700">, </span><span style="color: #0000BB">100</span><span style="color: #007700">, </span><span style="color: #0000BB">100</span><span style="color: #007700">, </span><span style="color: #0000BB">0</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$ar2 </span><span style="color: #007700">= array(</span><span style="color: #0000BB">1</span><span style="color: #007700">, </span><span style="color: #0000BB">3</span><span style="color: #007700">, </span><span style="color: #0000BB">2</span><span style="color: #007700">, </span><span style="color: #0000BB">4</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">array_multisort</span><span style="color: #007700">(</span><span style="color: #0000BB">$ar1</span><span style="color: #007700">, </span><span style="color: #0000BB">$ar2</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$ar1</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$ar2</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
    </div>

    <div class="example-contents"><p>
     这个例子里，排序后，第一个数组会包含  0、
     10、 100、 100。
     第二个数组会包含 4、1、 2、 3。
     第二个数组里的项目对应第一个数组后也进行了排序（100 和 100）。
    </p></div>
    <div class="example-contents screen">
<div class="annotation-interactive examplescode"><pre class="examplescode">array(4) {
  [0]=&gt; int(0)
  [1]=&gt; int(10)
  [2]=&gt; int(100)
  [3]=&gt; int(100)
}
array(4) {
  [0]=&gt; int(4)
  [1]=&gt; int(1)
  [2]=&gt; int(2)
  [3]=&gt; int(3)
}</pre>
</div>
    </div>
   </div>
  </p>
  <p class="para">
   <div class="example" id="example-2">
    <p><strong>示例 #2 排序多维数组</strong></p>
    <div class="example-contents">
<div class="annotation-interactive phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br />$ar </span><span style="color: #007700">= array(<br />       array(</span><span style="color: #DD0000">"10"</span><span style="color: #007700">, </span><span style="color: #0000BB">11</span><span style="color: #007700">, </span><span style="color: #0000BB">100</span><span style="color: #007700">, </span><span style="color: #0000BB">100</span><span style="color: #007700">, </span><span style="color: #DD0000">"a"</span><span style="color: #007700">),<br />       array(   </span><span style="color: #0000BB">1</span><span style="color: #007700">,  </span><span style="color: #0000BB">2</span><span style="color: #007700">, </span><span style="color: #DD0000">"2"</span><span style="color: #007700">,   </span><span style="color: #0000BB">3</span><span style="color: #007700">,   </span><span style="color: #0000BB">1</span><span style="color: #007700">)<br />      );<br /></span><span style="color: #0000BB">array_multisort</span><span style="color: #007700">(</span><span style="color: #0000BB">$ar</span><span style="color: #007700">[</span><span style="color: #0000BB">0</span><span style="color: #007700">], </span><span style="color: #0000BB">SORT_ASC</span><span style="color: #007700">, </span><span style="color: #0000BB">SORT_STRING</span><span style="color: #007700">,<br />                </span><span style="color: #0000BB">$ar</span><span style="color: #007700">[</span><span style="color: #0000BB">1</span><span style="color: #007700">], </span><span style="color: #0000BB">SORT_NUMERIC</span><span style="color: #007700">, </span><span style="color: #0000BB">SORT_DESC</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">var_dump</span><span style="color: #007700">(</span><span style="color: #0000BB">$ar</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
    </div>

    <div class="example-contents"><p>
     本例中在排序后，第一个数组将变成
     &quot;10&quot;，100，100，11，&quot;a&quot;（被当作字符串以升序排列）。第二个数组将包含
     1, 3, &quot;2&quot;, 2, 1（被当作数字以降序排列）。
    </p></div>
    <div class="example-contents screen">
<div class="annotation-interactive examplescode"><pre class="examplescode">array(2) {
  [0]=&gt; array(5) {
    [0]=&gt; string(2) &quot;10&quot;
    [1]=&gt; int(100)
    [2]=&gt; int(100)
    [3]=&gt; int(11)
    [4]=&gt; string(1) &quot;a&quot;
  }
  [1]=&gt; array(5) {
    [0]=&gt; int(1)
    [1]=&gt; int(3)
    [2]=&gt; string(1) &quot;2&quot;
    [3]=&gt; int(2)
    [4]=&gt; int(1)
  }
}</pre>
</div>
    </div>
   </div>
  </p>
  <p class="para">
   <div class="example" id="example-3">
    <p><strong>示例 #3 对数据库结果进行排序</strong></p>
    <div class="example-contents"><p>
     本例中 <var class="varname">data</var>
     数组中的每个单元表示一个表中的一行。这是典型的数据库记录的数据集合。
    </p></div>
    <div class="example-contents"><p>
     例子中的数据如下：
    </p></div>
    <div class="example-contents screen">
<div class="annotation-interactive examplescode"><pre class="examplescode">volume | edition
-------+--------
    67 |       2
    86 |       1
    85 |       6
    98 |       2
    86 |       6
    67 |       7</pre>
</div>
    </div>
    <div class="example-contents"><p>
     数据全都存放在名为 <var class="varname">data</var>
     的数组中。这通常是通过循环从数据库取得的结果，例如
     <span class="function"><a href="function.mysql-fetch-assoc.php" class="function">mysql_fetch_assoc()</a></span>。
    </p></div>
    <div class="example-contents"><p>
     本例中将把 <var class="varname">volume</var> 降序排列，把
     <var class="varname">edition</var> 升序排列。
    </p></div>
    <div class="example-contents"><p>
     现在有了包含有行的数组，但是 <span class="function"><strong>array_multisort()</strong></span>
     需要一个包含列的数组，因此用以下代码来取得列，然后排序。
    </p></div>
    <div class="example-contents">
<div class="annotation-interactive phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br /></span><span style="color: #FF8000">// 通过循环调用 mysqli_fetch_assoc 生成的数据：<br /></span><span style="color: #0000BB">$data</span><span style="color: #007700">[] = array(</span><span style="color: #DD0000">'volume' </span><span style="color: #007700">=&gt; </span><span style="color: #0000BB">67</span><span style="color: #007700">, </span><span style="color: #DD0000">'edition' </span><span style="color: #007700">=&gt; </span><span style="color: #0000BB">2</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$data</span><span style="color: #007700">[] = array(</span><span style="color: #DD0000">'volume' </span><span style="color: #007700">=&gt; </span><span style="color: #0000BB">86</span><span style="color: #007700">, </span><span style="color: #DD0000">'edition' </span><span style="color: #007700">=&gt; </span><span style="color: #0000BB">1</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$data</span><span style="color: #007700">[] = array(</span><span style="color: #DD0000">'volume' </span><span style="color: #007700">=&gt; </span><span style="color: #0000BB">85</span><span style="color: #007700">, </span><span style="color: #DD0000">'edition' </span><span style="color: #007700">=&gt; </span><span style="color: #0000BB">6</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$data</span><span style="color: #007700">[] = array(</span><span style="color: #DD0000">'volume' </span><span style="color: #007700">=&gt; </span><span style="color: #0000BB">98</span><span style="color: #007700">, </span><span style="color: #DD0000">'edition' </span><span style="color: #007700">=&gt; </span><span style="color: #0000BB">2</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$data</span><span style="color: #007700">[] = array(</span><span style="color: #DD0000">'volume' </span><span style="color: #007700">=&gt; </span><span style="color: #0000BB">86</span><span style="color: #007700">, </span><span style="color: #DD0000">'edition' </span><span style="color: #007700">=&gt; </span><span style="color: #0000BB">6</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$data</span><span style="color: #007700">[] = array(</span><span style="color: #DD0000">'volume' </span><span style="color: #007700">=&gt; </span><span style="color: #0000BB">67</span><span style="color: #007700">, </span><span style="color: #DD0000">'edition' </span><span style="color: #007700">=&gt; </span><span style="color: #0000BB">7</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// 取得列的列表<br /></span><span style="color: #007700">foreach (</span><span style="color: #0000BB">$data </span><span style="color: #007700">as </span><span style="color: #0000BB">$key </span><span style="color: #007700">=&gt; </span><span style="color: #0000BB">$row</span><span style="color: #007700">) {<br />    </span><span style="color: #0000BB">$volume</span><span style="color: #007700">[</span><span style="color: #0000BB">$key</span><span style="color: #007700">]  = </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #DD0000">'volume'</span><span style="color: #007700">];<br />    </span><span style="color: #0000BB">$edition</span><span style="color: #007700">[</span><span style="color: #0000BB">$key</span><span style="color: #007700">] = </span><span style="color: #0000BB">$row</span><span style="color: #007700">[</span><span style="color: #DD0000">'edition'</span><span style="color: #007700">];<br />}<br /><br /></span><span style="color: #FF8000">// 你可以使用 array_column() 代替上面的代码<br /></span><span style="color: #0000BB">$volume  </span><span style="color: #007700">= </span><span style="color: #0000BB">array_column</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">, </span><span style="color: #DD0000">'volume'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$edition </span><span style="color: #007700">= </span><span style="color: #0000BB">array_column</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">, </span><span style="color: #DD0000">'edition'</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// 将数据根据 volume 降序排列，根据 edition 升序排列<br />// 把 $data 作为最后一个参数，以通用键排序<br /></span><span style="color: #0000BB">array_multisort</span><span style="color: #007700">(</span><span style="color: #0000BB">$volume</span><span style="color: #007700">, </span><span style="color: #0000BB">SORT_DESC</span><span style="color: #007700">, </span><span style="color: #0000BB">$edition</span><span style="color: #007700">, </span><span style="color: #0000BB">SORT_ASC</span><span style="color: #007700">, </span><span style="color: #0000BB">$data</span><span style="color: #007700">);<br /><br /></span><span style="color: #FF8000">// 遍历数据并输出每列的排序值<br /></span><span style="color: #007700">echo </span><span style="color: #DD0000">'volume | edition'</span><span style="color: #007700">, </span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br />echo </span><span style="color: #DD0000">'-------+--------'</span><span style="color: #007700">, </span><span style="color: #0000BB">PHP_EOL</span><span style="color: #007700">;<br />for (</span><span style="color: #0000BB">$i </span><span style="color: #007700">= </span><span style="color: #0000BB">0</span><span style="color: #007700">; </span><span style="color: #0000BB">$i </span><span style="color: #007700">&lt; </span><span style="color: #0000BB">count</span><span style="color: #007700">(</span><span style="color: #0000BB">$data</span><span style="color: #007700">); </span><span style="color: #0000BB">$i</span><span style="color: #007700">++) {<br />     </span><span style="color: #0000BB">printf</span><span style="color: #007700">(</span><span style="color: #DD0000">"%6d | %7d\n"</span><span style="color: #007700">, </span><span style="color: #0000BB">$volume</span><span style="color: #007700">[</span><span style="color: #0000BB">$i</span><span style="color: #007700">], </span><span style="color: #0000BB">$edition</span><span style="color: #007700">[</span><span style="color: #0000BB">$i</span><span style="color: #007700">]);<br />}<br /></span><span style="color: #0000BB">?&gt;</span></span></code></div>
    </div>

    <div class="example-contents"><p>
     数据集合现在排好序了，结果如下：
    </p></div>
    <div class="example-contents screen">
<div class="annotation-interactive examplescode"><pre class="examplescode">volume | edition
-------+--------
    98 |       2
    86 |       1
    86 |       6
    85 |       6
    67 |       2
    67 |       7</pre>
</div>
    </div>
   </div>
  </p>
  <p class="para">
   <div class="example" id="example-4">
    <p><strong>示例 #4 不区分大小写字母排序</strong></p>
    <div class="example-contents"><p>
     <strong><code><a href="array.constants.php#constant.sort-string">SORT_STRING</a></code></strong> 和
     <strong><code><a href="array.constants.php#constant.sort-regular">SORT_REGULAR</a></code></strong>
     都是区分大小写字母的，大写字母会排在小写字母之前。
    </p></div>
    <div class="example-contents"><p>
     要进行不区分大小写的排序，就要按照原数组的小写字母拷贝来排序。
    </p></div>
    <div class="example-contents">
<div class="annotation-interactive phpcode"><code><span style="color: #000000"><span style="color: #0000BB">&lt;?php<br />$array </span><span style="color: #007700">= array(</span><span style="color: #DD0000">'Alpha'</span><span style="color: #007700">, </span><span style="color: #DD0000">'atomic'</span><span style="color: #007700">, </span><span style="color: #DD0000">'Beta'</span><span style="color: #007700">, </span><span style="color: #DD0000">'bank'</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$array_lowercase </span><span style="color: #007700">= </span><span style="color: #0000BB">array_map</span><span style="color: #007700">(</span><span style="color: #DD0000">'strtolower'</span><span style="color: #007700">, </span><span style="color: #0000BB">$array</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">array_multisort</span><span style="color: #007700">(</span><span style="color: #0000BB">$array_lowercase</span><span style="color: #007700">, </span><span style="color: #0000BB">SORT_ASC</span><span style="color: #007700">, </span><span style="color: #0000BB">SORT_STRING</span><span style="color: #007700">, </span><span style="color: #0000BB">$array</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$array</span><span style="color: #007700">);<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">Array
(
    [0] =&gt; Alpha
    [1] =&gt; atomic
    [2] =&gt; bank
    [3] =&gt; Beta
)</pre>
</div>
    </div>
   </div>
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-function.array-multisort-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li><span class="function"><a href="function.usort.php" class="function" rel="rdfs-seeAlso">usort()</a> - 使用用户自定义的比较函数对数组中的值进行排序</span></li>
    <li><a href="array.sorting.php" class="link">数组排序函数对比</a></li>
   </ul>
  </p>
 </div>


</div><?php manual_footer($setup); ?>