array group by in php or count array by group by

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.

Leri · Accepted Answer · 2012-10-31 10:17:08Z

5

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 )

edited Oct 31, 2012 at 10:17

Leri

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answered Oct 31, 2012 at 10:14

Vikram Jain

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1 Comment

Riz Over a year ago

+1 - nice and simple if one knows there is a function in PHP for this.

Manoj · Accepted Answer · 2012-10-31 10:25:32Z

1

Copy paste code,

<?php
$rt=Array(Array('a','a','b','b','c','c'));
$out=array_count_values( $rt[0]);
print_r($out) ;
?>

output

Array
(
 [a] => 2
 [b] => 2
 [c] => 2
)

answered Oct 31, 2012 at 10:25

Manoj

3733 silver badges10 bronze badges

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