数组按php或按数组计数

Question

i have an array like :

Array
(
    [0] => Array
        (
            [0] => a
            [1] => a
            [2] => b
            [3] => c
            [4] => b
            [5] => c
            [6] => b
        )
 )

so i have to make array by group by with count total no. of array like (output) :

    a = 2
    b = 3
    c = 2

if array a is use two times than count of a will be 2.

Answer 1

Use this :

array_count_values(array)

Ex:

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

output:

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