php array_count_values 用法详解-php手册-php.cn

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php array_count_values 用法详解

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Jun 21, 2016 am 08:53 AM

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array_count_values — 统计数组中所有的值出现的次数

说明

array array_count_values ( array $input )

array_count_values() 返回一个数组，该数组用 input 数组中的值作为键名，该值在 input 数组中出现的次数作为值。

Example #1 array_count_values() 例子

<span style="color: rgb(0,0,0)"><font face="NSimsun"><span style="color: rgb(0,0,187)"><?php <br/>
$array </span><span style="color: rgb(0,119,0)">= array(</span><span style="color: rgb(0,0,187)">1</span><span style="color: rgb(0,119,0)">, </span><span style="color: rgb(221,0,0)">"hello"</span><span style="color: rgb(0,119,0)">, </span><span style="color: rgb(0,0,187)">1</span><span style="color: rgb(0,119,0)">, </span><span style="color: rgb(221,0,0)">"world"</span><span style="color: rgb(0,119,0)">, </span><span style="color: rgb(221,0,0)">"hello"</span></font><font face="NSimsun"><span style="color: rgb(0,119,0)">);<br>
</span><span style="color: rgb(0,0,187)">print_r</span><span style="color: rgb(0,119,0)">(</span><span style="color: rgb(0,0,187)">array_count_values </span><span style="color: rgb(0,119,0)">(</span><span style="color: rgb(0,0,187)">$array</span></font><font face="NSimsun"><span style="color: rgb(0,119,0)">));<br>
</span><span style="color: rgb(0,0,187)">?></span>
			</font></span>

上例将输出：

Array<br>(<br>    [1] => 2<br>    [hello] => 2<br>    [world] => 1<br>)<br>

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