Array PHP. How to get deep of element in array

Question

$mang = array(
            '0' => array(
                'uid' => 2,
                'introducer_uid' => 1,
                'introducer_users' => array(
                                        '0' => array(
                                                'uid' => 8,
                                                'introducer_uid' => 2,
                                                'introducer_users' => array() 
                                                ),
                                        '1' => array(
                                                'uid' => 9,
                                                'introducer_uid' => 2,
                                                'introducer_users' => array()) 
                                        ) 
                ),
            '1' => array(
                'uid' => 3,
                'introducer_uid' => 1,
                'introducer_users' => array(
                                        '0' => array(
                                                'uid' => 5,
                                                'introducer_uid' => 3,
                                                'introducer_users' => array()
                                        ),
                                        '1' => array(
                                                'uid' => 6,
                                                'introducer_uid' => 3,
                                                'introducer_users' => array() 
                                        ),
                                        '2' => array(
                                                'uid' => 7,
                                                'introducer_uid' => 3,
                                                'introducer_users' => array(
                                                                        '0' => array(
                                                                                    'uid' => 10,
                                                                                    'introducer_uid' => 7,
                                                                                    'introducer_users' => array(
                                                                                                            '0' => array(
                                                                                                                'uid' => 11,
                                                                                                                'introducer_uid' => 10,
                                                                                                                'introducer_users' => array() 
                                                                                                                        ) 
                                                                                                            ) 
                                                                                    ) 
                                                                        ) 
                                                ) 
                                        ) 
                ),
            '2' => array(
                    'uid' => 4,
                    'introducer_uid' => 1,
                    'introducer_users' => array() 
                ) 
        );

My require:

Make a functions to Count deep of item in $mang array.

Sample. Deep of any item will return look like:

'uid' = 10 will return deep = 3
'uid' = 11 will return deep = 4
'uid' = 8 will return deep = 2
'uid' = 2 will return deep = 1

Sample functions look like

function count_deep($array,$uid){ return $deep; }

Anyone please help me. Thank you so much.

What would help is if you could tell us. How would you like to query your giant array and what would you like to return from said query? — castis, Oct 13 '15 at 13:33
If it is school task, and the array not that deep - recursive functions with depth count will do the job with almost no code. your count_deep can call count_deep_rec($array, $uid, 0/*the initial depth*/, false/*is_found?*) Is found can be used later to stop the other recursive calls if there are and improve perf. — David Constantine, Oct 13 '15 at 13:51

score 1 · Accepted Answer · answered Oct 13 '15 at 13:49

You can use the following recursive function to get the depth where the uuid value is found. This version returns value 0 if the uuid value is not found at all.

function searchDepth($uid, $array, $depth = 0)
{
    $depth++;

    foreach ($array as $element)
    {
        if (isset($element['uid']) && $element['uid'] == $uid)
        {
            return $depth;
        }
        else if (isset($element['introducer_users']))
        {
            $result = searchDepth($uid, $element['introducer_users'], $depth);

            if ($result != 0)
            {
                return $result;
            }
        }
    }

    return 0;
}

And to invoke the function with the search uuid and the array

$depth = searchDepth(10, $mang);

score 0 · Answer 2 · edited May 23 '17 at 12:29

0

Someone has already asked this. Best look for an answer there; however, note that in PHP it is possible to have an infinitely deep array, it would therefore be a good idea to have a maximum depth just in case things get ridiculous.

edited May 23 '17 at 12:29

Community

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answered Oct 13 '15 at 13:50

mjsa

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Thanks, i found this but it not help me. – Phúc Phạm Hoàng Oct 13 '15 at 13:54

Array PHP. How to get deep of element in array

2 Answers2

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