PHP: array_reverse

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class="methodname"><strong>array_reverse</strong></span>(<span class="methodparam"><span class="type"><a href="language.types.array.php" class="type array">array</a></span> <code class="parameter">$array</code></span>, <span class="methodparam"><span class="type"><a href="language.types.boolean.php" class="type bool">bool</a></span> <code class="parameter">$preserve_keys</code><span class="initializer"> = <strong><code><a href="reserved.constants.php#constant.false">false</a></code></strong></span></span>): <span class="type"><a href="language.types.array.php" class="type array">array</a></span></div> <p class="para rdfs-comment"> Takes an input <code class="parameter">array</code> and returns a new array with the order of the elements reversed. </p> </div> <div class="refsect1 parameters" id="refsect1-function.array-reverse-parameters"> <h3 class="title">Parameters</h3> <p class="para"> <dl> <dt><code class="parameter">array</code></dt> <dd> <p class="para"> The input array. </p> </dd> <dt><code class="parameter">preserve_keys</code></dt> <dd> <p class="para"> If set to <strong><code><a href="reserved.constants.php#constant.true">true</a></code></strong> numeric keys are preserved. Non-numeric keys are not affected by this setting and will always be preserved. </p> </dd> </dl> </p> </div> <div class="refsect1 returnvalues" id="refsect1-function.array-reverse-returnvalues"> <h3 class="title">Return Values</h3> <p class="para"> Returns the reversed array. </p> </div> <div class="refsect1 examples" id="refsect1-function.array-reverse-examples"> <h3 class="title">Examples</h3> <p class="para"> <div class="example" id="example-5174"> <p><strong>Example #1 <span class="function"><strong>array_reverse()</strong></span> example</strong></p> <div class="example-contents"> <div class="phpcode"><code><span style="color: #000000"><span style="color: #0000BB"><?php<br />$input </span><span style="color: #007700">= array(</span><span style="color: #DD0000">"php"</span><span style="color: #007700">, </span><span style="color: #0000BB">4.0</span><span style="color: #007700">, array(</span><span style="color: #DD0000">"green"</span><span style="color: #007700">, </span><span style="color: #DD0000">"red"</span><span style="color: #007700">));<br /></span><span style="color: #0000BB">$reversed </span><span style="color: #007700">= </span><span style="color: #0000BB">array_reverse</span><span style="color: #007700">(</span><span style="color: #0000BB">$input</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">$preserved </span><span style="color: #007700">= </span><span style="color: #0000BB">array_reverse</span><span style="color: #007700">(</span><span style="color: #0000BB">$input</span><span style="color: #007700">, </span><span style="color: #0000BB">true</span><span style="color: #007700">);<br /><br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$input</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$reversed</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">print_r</span><span style="color: #007700">(</span><span style="color: #0000BB">$preserved</span><span style="color: #007700">);<br /></span><span style="color: #0000BB">?></span></span></code></div> </div> <div class="example-contents"><p>The above example will output:</p></div> <div class="example-contents screen"> <div class="examplescode"><pre class="examplescode">Array ( [0] => php [1] => 4 [2] => Array ( [0] => green [1] => red ) ) Array ( [0] => Array ( [0] => green [1] => red ) [1] => 4 [2] => php ) Array ( [2] => Array ( [0] => green [1] => red ) [1] => 4 [0] => php )</pre> </div> </div> </div> </p> </div> <div class="refsect1 seealso" id="refsect1-function.array-reverse-seealso"> <h3 class="title">See Also</h3> <p class="para"> <ul class="simplelist"> <li><span class="function"><a href="function.array-flip.php" class="function" rel="rdfs-seeAlso">array_flip()</a> - Exchanges all keys with their associated values in an array</span></li> </ul> </p> </div> </div> <div class="contribute"> <h3 class="title">Found A Problem?</h3> <div> </div> <div class="edit-bug"> <a href="https://github.com/php/doc-base/blob/master/README.md" title="This will take you to our contribution guidelines on GitHub" target="_blank" rel="noopener noreferrer">Learn How To Improve This Page</a> • <a href="https://github.com/php/doc-en/blob/master/reference/array/functions/array-reverse.xml">Submit a Pull Request</a> • <a href="https://github.com/php/doc-en/issues/new?body=From%20manual%20page:%20https:%2F%2Fphp.net%2Ffunction.array-reverse%0A%0A---">Report a Bug</a> </div> </div><section id="usernotes"> <div class="head"> <span class="action"><a href="/manual/add-note.php?sect=function.array-reverse&repo=en&redirect=https://www.php.net/manual/en/function.array-reverse.php">＋<small>add a note</small></a></span> <h3 class="title">User Contributed Notes </h3> </div> <div class="note">There are no user contributed notes for this 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