Home > php教程 > php手册 > body text

PHP一维数组排序方法

WBOY
Release: 2016-06-13 09:35:20
Original
2920 people have browsed it

   不管在现实生活中还是程序世界里,顺序总是很重要——真不敢想象一个没有顺序的世界会什么样子!PHP数组也不例外。PHP提供了四组针对PHP数组进行排序的函数,前三种都是针对一维数组的,我们先说这三种,第四种对多维数组的排序在下一篇文章中说,那个有点复杂。

  第一组 :sort 和 rsort ,按照PHP数组键值的顺序asc和逆序desc进行排序,同时破坏原来数组的索引关系——其实是删除索引之后重新建立从0开始的数字索引。看一下例程:

<span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,0); FONT-WEIGHT: bold; PADDING-TOP: 0px"><?php </span>
<span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,136); PADDING-TOP: 0px">$a</span> <span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">=</span> <span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(153,0,0); PADDING-TOP: 0px">array</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">(</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,255); PADDING-TOP: 0px">"a"</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">=></span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(204,102,204); PADDING-TOP: 0px">1</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">,</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(204,102,204); PADDING-TOP: 0px">2</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">)</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">;</span>
<span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(153,0,0); PADDING-TOP: 0px">sort</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">(</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,136); PADDING-TOP: 0px">$a</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">)</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">;</span>
<span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(153,0,0); PADDING-TOP: 0px">var_dump</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">(</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,136); PADDING-TOP: 0px">$a</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">)</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">;</span>
 
<span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(153,0,0); PADDING-TOP: 0px">rsort</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">(</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,136); PADDING-TOP: 0px">$a</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">)</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">;</span>
<span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(153,0,0); PADDING-TOP: 0px">var_dump</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">(</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,136); PADDING-TOP: 0px">$a</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">)</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">;</span>
<span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,0); FONT-WEIGHT: bold; PADDING-TOP: 0px">?></span></span>
Copy after login

  看一下第一个输出结果,第一个输出:

  array(2) {

  [0]=>

  int(1)

  [1]=>

  int(2)

  }

  第二个输出:

  array(2) {

  [0]=>

  int(5)

  [1]=>

  int(4)

  }

  发现没有我们原来定义的索引a哪里去了?哪里去了?可以肯定的说是被他们无情的删除了,你要是对原来的索引关系并不在意的话,可以使用他们!

  第二组函数:asort 和 arsort ,这两个函数就比较厉害一点了,只要他们可以保留数组原有的索引关系,把上例的sort 和 rsort 分别用这两个函数替换一下,看运行结果:

  array(2) {

  ["a"]=>

  int(1)

  [0]=>

  int(2)

  }

  array(2) {

  [0]=>

  int(2)

  ["a"]=>

  int(1)

  }

  这个一看就明白的,不用说了吧!

  第三组PHP数组排序函数:krsort 和 ksort 这两个不同于以上两组,这两函数是对键名进行排序的,大家可以把上例的函数替换成这两个,看看具体运行结果,这里也不说了,不然这个文章写的就太长了,怕有些兄弟没有耐心看到本文的重点,虽然重点就在下边!

  通过自定义函数对PHP数组进行排序,有三个函数分别是:

  uasort 通过自定义函数对PHP数组的键值进行排序,并且保留原来的索引关系。

  uksort 通过自定义函数对PHP数组的键名进行排序,并且保留原来的索引关系。

  usort通过自定义函数对PHP数组的键值进行排序,并且删除原来的索引关系,从零开始建立新的索引。

  这个地方当然需要一个例子:

<span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px"><!--</span>p
<span style="PADDING-BOTTOM: 0px; FONT-STYLE: italic; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(102,102,102); PADDING-TOP: 0px">//首先顶一个函数,这个函数需要接受两个参数,并且返回值是一定的</span>
<span style="PADDING-BOTTOM: 0px; FONT-STYLE: italic; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(102,102,102); PADDING-TOP: 0px">//第一个参数等于第二个参数的时候返回0,小于的时候返回-1,大于返回1</span>
 
<span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,0); FONT-WEIGHT: bold; PADDING-TOP: 0px">function</span> cmp<span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">(</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,136); PADDING-TOP: 0px">$a</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">,</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,136); PADDING-TOP: 0px">$b</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">)</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">{</span>
 <span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,136); PADDING-TOP: 0px">$a</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">+=</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(204,102,204); PADDING-TOP: 0px">1</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">;</span>
 <span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,136); PADDING-TOP: 0px">$b</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">+=</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(204,102,204); PADDING-TOP: 0px">3</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">;</span><span style="PADDING-BOTTOM: 0px; FONT-STYLE: italic; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(102,102,102); PADDING-TOP: 0px">//改变这些值之后进行比较</span>
 
 <span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(177,177,0); PADDING-TOP: 0px">if</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">(</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,136); PADDING-TOP: 0px">$a</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">==</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,136); PADDING-TOP: 0px">$b</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">)</span> <span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(177,177,0); PADDING-TOP: 0px">return</span> <span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(204,102,204); PADDING-TOP: 0px">0</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">;</span>
 <span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(177,177,0); PADDING-TOP: 0px">return</span> <span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">(</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,136); PADDING-TOP: 0px">$a</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">&</span>lt<span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">;</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,136); PADDING-TOP: 0px">$b</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">)</span>?<span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">-</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(204,102,204); PADDING-TOP: 0px">1</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">:</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(204,102,204); PADDING-TOP: 0px">1</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">;</span>
<span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">}</span>
 
<span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,136); PADDING-TOP: 0px">$a</span> <span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">=</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(153,0,0); PADDING-TOP: 0px">array</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">(</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(204,102,204); PADDING-TOP: 0px">1</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">,</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(204,102,204); PADDING-TOP: 0px">4</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">,</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(204,102,204); PADDING-TOP: 0px">3</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">,</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(204,102,204); PADDING-TOP: 0px">5</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">)</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">;</span>
<span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(153,0,0); PADDING-TOP: 0px">uasort</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">(</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,136); PADDING-TOP: 0px">$a</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">,</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,255); PADDING-TOP: 0px">'cmp'</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">)</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">;</span>
<span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(153,0,0); PADDING-TOP: 0px">var_dump</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">(</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,0,136); PADDING-TOP: 0px">$a</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(0,153,0); PADDING-TOP: 0px">)</span><span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">;</span>
<span style="PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-LEFT: 0px; PADDING-RIGHT: 0px; COLOR: rgb(51,153,51); PADDING-TOP: 0px">--></span>
Copy after login

  输出结果:

  array(4) {

  [0]=>

  int(1)

  [3]=>

  int(5)

  [1]=>

  int(4)

  [2]=>

  int(3)

  }

  ,呵呵……是不是比不排序还乱呢?我们这里只是演示了使用的方法而已,具体你用到的时候自己搞吧!你要是不对这些数值进行操作之后再比较,例如我们这里:

  $a+=1;

  $b+=3;//改变这些值之后进行比较

  那么你还不如直接用sort呢是不是?

  其他两个跟这个差不多就不说了,随后战地会对PHP针对多维数组进行排序做一些实验,然后把结果和过程告诉大家,稍等啊!

source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Recommendations
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template