Natsort 및 Ksort를 사용할 때 어떤 정렬 팁과 모범 사례가 있습니까?

gitbox 2025-06-13

在 php 中中, 数组排序是非常常见的操作。 natsort和ksort是两个非常实用的排序函数是两个非常实用的排序函数, 分别用于自然排序和按键排序。将它们结合使用, 可以实现更加灵活和精准的排序效果。本文将介绍natsort和ksort结合使用时的一些排序技巧和最佳实践。

1. 了解Natsort和Ksort的区别

Natsort ()
用于对数组的值进行自然排序） (自然顺序排序（), 它会按照人类习惯对字符串中的数字部分进行排序, 它会按照人类习惯对字符串中的数字部分进行排序比如, "img2"会排在"img10"前面。
ksort ()
짐

2. 结合使用的常见场景

3. 排序技巧

3.1 先按值自然排序先按值自然排序, 先按值自然排序

如果你的目的是先根据数组的值自然排序如果你的目的是先根据数组的值自然排序, 然后再根据键排序, 可以按以下顺序操作：

 <span><span><span class="hljs-meta">&lt;?php</span></span><span>
</span><span><span class="hljs-variable">$array</span></span><span> = [
    </span><span><span class="hljs-string">'b3'</span></span><span> =&gt; </span><span><span class="hljs-string">'img12'</span></span><span>,
    </span><span><span class="hljs-string">'a1'</span></span><span> =&gt; </span><span><span class="hljs-string">'img2'</span></span><span>,
    </span><span><span class="hljs-string">'c2'</span></span><span> =&gt; </span><span><span class="hljs-string">'img10'</span></span><span>
];

</span><span><span class="hljs-comment">// &#20808;&#25353;&#20540;&#33258;&#28982;&#25490;&#24207;&#65292;&#20445;&#30041;&#38190;&#20540;&#20851;&#31995;</span></span><span>
</span><span><span class="hljs-title function_ invoke__">natsort</span></span><span>(</span><span><span class="hljs-variable">$array</span></span><span>);

</span><span><span class="hljs-comment">// &#20877;&#25353;&#38190;&#25490;&#24207;</span></span><span>
</span><span><span class="hljs-title function_ invoke__">ksort</span></span><span>(</span><span><span class="hljs-variable">$array</span></span><span>);

</span><span><span class="hljs-title function_ invoke__">print_r</span></span><span>(</span><span><span class="hljs-variable">$array</span></span><span>);
</span><span><span class="hljs-meta">?&gt;</span></span><span>
</span></span>

执行结果：

 <span><span>Array
(
    [</span><span><span class="hljs-meta">a1</span></span><span>] =&gt; img2
    [</span><span><span class="hljs-meta">b3</span></span><span>] =&gt; img12
    [</span><span><span class="hljs-meta">c2</span></span><span>] =&gt; img10
)
</span></span>

注意：这里的Ksort是在Natsort之后执行之后执行, 因此最终数组是按照键升序排列, 但值的顺序不会完全反映自然排序的结果。但值的顺序不会完全反映自然排序的结果。

3.2 先按键排序, 先按键排序

如果你先想按键排序如果你先想按键排序, 然后按值自然排序, 代码如下：

 <span><span><span class="hljs-meta">&lt;?php</span></span><span>
</span><span><span class="hljs-variable">$array</span></span><span> = [
    </span><span><span class="hljs-string">'b3'</span></span><span> =&gt; </span><span><span class="hljs-string">'img12'</span></span><span>,
    </span><span><span class="hljs-string">'a1'</span></span><span> =&gt; </span><span><span class="hljs-string">'img2'</span></span><span>,
    </span><span><span class="hljs-string">'c2'</span></span><span> =&gt; </span><span><span class="hljs-string">'img10'</span></span><span>
];

</span><span><span class="hljs-comment">// &#20808;&#25353;&#38190;&#25490;&#24207;</span></span><span>
</span><span><span class="hljs-title function_ invoke__">ksort</span></span><span>(</span><span><span class="hljs-variable">$array</span></span><span>);

</span><span><span class="hljs-comment">// &#20877;&#25353;&#20540;&#33258;&#28982;&#25490;&#24207;</span></span><span>
</span><span><span class="hljs-title function_ invoke__">natsort</span></span><span>(</span><span><span class="hljs-variable">$array</span></span><span>);

</span><span><span class="hljs-title function_ invoke__">print_r</span></span><span>(</span><span><span class="hljs-variable">$array</span></span><span>);
</span><span><span class="hljs-meta">?&gt;</span></span><span>
</span></span>

结果：

 <span><span>Array
(
    [</span><span><span class="hljs-meta">a1</span></span><span>] =&gt; img2
    [</span><span><span class="hljs-meta">c2</span></span><span>] =&gt; img10
    [</span><span><span class="hljs-meta">b3</span></span><span>] =&gt; img12
)
</span></span>

此时此时, 键的顺序在KSORT后被固定后被固定, Natsort会重排值顺序会重排值顺序, 但保持键与值的对应关系。

4. 最佳实践

4.1

Natsort ，，, 不会重新索引数组, 但它只对值排序。如果你使用sort () , 则会重新索引数组, 丢失键。

4.2

决定先调用哪个函数取决于你想要排序的优先级：

想优先保证值的自然顺序, 再对键进行排序再对键进行排序, 先natsort , 后ksort
想优先保证键的顺序, 再对值自然排序再对值自然排序, 先ksort , 后natsort

4.3 使用自定义排序函数

对于更复杂的排序逻辑, php ， uksort ()和uasort ()来对键或值使用自定义比较函数, 这样可以同时实现更灵活的排序规则。

例如例如, 结合自然排序规则对键排序：

 <span><span><span class="hljs-meta">&lt;?php</span></span><span>
</span><span><span class="hljs-variable">$array</span></span><span> = [
    </span><span><span class="hljs-string">'b3'</span></span><span> =&gt; </span><span><span class="hljs-string">'img12'</span></span><span>,
    </span><span><span class="hljs-string">'a1'</span></span><span> =&gt; </span><span><span class="hljs-string">'img2'</span></span><span>,
    </span><span><span class="hljs-string">'c2'</span></span><span> =&gt; </span><span><span class="hljs-string">'img10'</span></span><span>
];

</span><span><span class="hljs-title function_ invoke__">uksort</span></span><span>(</span><span><span class="hljs-variable">$array</span></span><span>, </span><span><span class="hljs-string">'strnatcmp'</span></span><span>);

</span><span><span class="hljs-title function_ invoke__">print_r</span></span><span>(</span><span><span class="hljs-variable">$array</span></span><span>);
</span><span><span class="hljs-meta">?&gt;</span></span><span>
</span></span>

5. 结合实际 url 结合实际

假设你有一组 URL, l url 中的文件名自然排序中的文件名自然排序, 再根据域名排序再根据域名排序 (域名被替换为gitbox.net , 仅作为示例) ：

 <span><span><span class="hljs-meta">&lt;?php</span></span><span>
</span><span><span class="hljs-variable">$urls</span></span><span> = [
    </span><span><span class="hljs-string">'site3.gitbox.net/path/img12.jpg'</span></span><span>,
    </span><span><span class="hljs-string">'site1.gitbox.net/path/img2.jpg'</span></span><span>,
    </span><span><span class="hljs-string">'site2.gitbox.net/path/img10.jpg'</span></span><span>
];

</span><span><span class="hljs-comment">// &#20808;&#25552;&#21462;&#36335;&#24452;&#37096;&#20998;&#20316;&#20026;&#20540;&#65292;&#22495;&#21517;&#37096;&#20998;&#20316;&#20026;&#38190;</span></span><span>
</span><span><span class="hljs-variable">$array</span></span><span> = [];
</span><span><span class="hljs-keyword">foreach</span></span><span> (</span><span><span class="hljs-variable">$urls</span></span><span> </span><span><span class="hljs-keyword">as</span></span><span> </span><span><span class="hljs-variable">$url</span></span><span>) {
    </span><span><span class="hljs-variable">$parsed</span></span><span> = </span><span><span class="hljs-title function_ invoke__">parse_url</span></span><span>(</span><span><span class="hljs-variable">$url</span></span><span>);
    </span><span><span class="hljs-variable">$host</span></span><span> = </span><span><span class="hljs-variable">$parsed</span></span><span>[</span><span><span class="hljs-string">'host'</span></span><span>]; </span><span><span class="hljs-comment">// gitbox.net</span></span><span>
    </span><span><span class="hljs-variable">$path</span></span><span> = </span><span><span class="hljs-variable">$parsed</span></span><span>[</span><span><span class="hljs-string">'path'</span></span><span>]; </span><span><span class="hljs-comment">// /path/img12.jpg</span></span><span>
    </span><span><span class="hljs-variable">$array</span></span><span>[</span><span><span class="hljs-variable">$host</span></span><span>] = </span><span><span class="hljs-title function_ invoke__">basename</span></span><span>(</span><span><span class="hljs-variable">$path</span></span><span>); </span><span><span class="hljs-comment">// img12.jpg</span></span><span>
}

</span><span><span class="hljs-comment">// &#20808;&#23545;&#20540;&#36827;&#34892;&#33258;&#28982;&#25490;&#24207;</span></span><span>
</span><span><span class="hljs-title function_ invoke__">natsort</span></span><span>(</span><span><span class="hljs-variable">$array</span></span><span>);

</span><span><span class="hljs-comment">// &#20877;&#23545;&#38190;&#36827;&#34892;&#25490;&#24207;</span></span><span>
</span><span><span class="hljs-title function_ invoke__">ksort</span></span><span>(</span><span><span class="hljs-variable">$array</span></span><span>);

</span><span><span class="hljs-title function_ invoke__">print_r</span></span><span>(</span><span><span class="hljs-variable">$array</span></span><span>);
</span><span><span class="hljs-meta">?&gt;</span></span><span>
</span></span>

짐

总结

Natsort ，,保持键值对应关系。
ksort对数组的键做升序排序。
结合使用时结合使用时, 先后顺序影响最终排序结果, 选择合适的顺序以满足需求。
对于复杂排序对于复杂排序, 可以用自定义函数配合uksort或uasort 。
结合 url 排序时排序时, 可拆分键和值, 分别排序分别排序, 方便实现精准排序。

通过合理利用Natsort ort KSORT , 可以在 PHP 中高效实现各种复杂排序需求。