Question

I have this array:

$number= array(

                array([0]=>2,[1]=>2)
                array([0]=>2,[1]=>2,[2]=>2,[3]=>2)
                array([0]=>2,[1]=>2,[2]=>2)
                array([0]=>2,[1]=>2)
)

I want maximum index in this array. for this array is 4.

Answer 1

This code tested and works for your array. Of course array_map with count func is best solution for dimention 1 max count

<?php
    $number= array(

                    array(0=>2,1=>2),
                    array(0=>2,1=>2,2=>2,3=>2),
                    array(0=>2,1=>2,2=>2),
                    array(0=>2,1=>2),
    );

    $ak = array_values($number);
    for($i;$i<count($number);$i++){
    $c[] = count($ak[$i]);
    }
    echo max($c);
    ?>