php - Get sum of all the data inside an multidimensional array recursively : -

i've array :

array (     [self] => folder     [my_data] => array         (         )      [18] => array         (             [self] => folder aa             [my_data] => array                 (                     [0] => stdclass object()                 )             [20] => array                 (                     [self] => folder aa                     [my_data] => array                         (                             [0] => stdclass object()                         )                     [21] => array                 ) 

i want total number of records in of present in 'my_data'. i've created function call recursively add count :

function getdocumentcount($tab, $count = 0) {     foreach ($tab $subtabkey => $subtabvalue) {         if ($subtabkey == 'my_data') {             $count += count($subtabvalue);         }         if ( count($tab) > 2 && $subtabkey != 'self' && $subtabkey != 'my_data' ) {             $count += getdocumentcount($subtabvalue, $count);         }     }      return $count; } 

but function returning 0. above example should return 2

edit : should return 5 returning 9

array (     [self] => main folder 22     [my_data] => array         (         )      [17] => array         (             [self] => new sub             [my_data] => array                 (                     [0] => stdclass object()                     [1] => stdclass object()                 )         )      [8] => array         (             [self] => sub folder 21             [my_data] => array                 (                 )              [9] => array                 (                     [self] => sub folder 211                     [my_data] => array                         (                             [0] => stdclass object()                             [1] => stdclass object()                             [2] => stdclass object()                         )                  )          )  ) 

you calculated first dimension of array length of my_data 0, $count 0. though calculated inner dimmension of array, didnot sum output of them. have sum output of inner output.

function getdocumentcount($tab, &$count) {     foreach ($tab $subtabkey => $subtabvalue) {         if ($subtabkey == 'my_data') {             $count += count($subtabvalue);         }         if ( count($tab) > 2 && $subtabkey != 'self' && $subtabkey != 'my_data' ) {             getdocumentcount($subtabvalue, $count);         }     } } 

use with:

$count = 0; getdocumentcount($tab, $count); echo $count;