Definition and Usage
定义和用法

The array_count_values() function returns an array, where the keys are the original array's values, and the values is the number of occurrences.
array_count_values()函数返回了一个数组，数组的键是原始数组中的键，数组的值是原始数组中该键的数量。

Syntax
语法

array_count_values(array)

Example
案例

<?php
$a=array("Cat","Dog","Horse","Dog");
print_r(array_count_values($a));
?> 

The output of the code above will be:
上述代码将输出下面的结果：

Array ( [Cat] => 1 [Dog] => 2 [Horse] => 1 )

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