php - Find a value & key in a multidimensional array -

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• find value , key in multidimensional array 8 answers

i have 2 arrays, need find if 1 of values in array 1 matches 1 of values in array two, multi-dimensional array. need check value array 1 in specific key in array two, "principal" key "authority" key may hold value.

here array one:

array (     [0] => 17     [1] => 6     [2] => 3     [3] => 2 ) 

and array 2 [actually truncated readability]:

array (     [modaccessresourcegroup] => array         (             [3] => array                 (                     [0] => array                         (                             [principal] => 0                             [authority] => 9999                             [policy] => array                                 (                                     [load] => 1                                 )                          )                      [1] => array                         (                             [principal] => 2                             [authority] => 10                             [policy] => array                                 (                                     [add_children] => 1                                     [create] => 1                                     [copy] => 1                                     [delete] => 1                                     [list] => 1                                     [load] => 1                                     [move] => 1                                     [publish] => 1                                     [remove] => 1                                     [save] => 1                                     [steal_lock] => 1                                     [undelete] => 1                                     [unpublish] => 1                                     [view] => 1                                 )                          )                      .... truncated ....                      [13] => array                         (                             [principal] => 16                             [authority] => 9999                             [policy] => array                                 (                                     [load] => 1                                 )                          )                  )              [8] => array                 (                     [0] => array                         (                             [principal] => 0                             [authority] => 9999                             [policy] => array                                 (                                     [load] => 1                                 )                          )                      [1] => array                         (                             [principal] => 1                             [authority] => 9999                             [policy] => array                                 (                                     [add_children] => 1                                     [create] => 1                                     [copy] => 1                                     [delete] => 1                                     [list] => 1                                     [load] => 1                                     [move] => 1                                     [publish] => 1                                     [remove] => 1                                     [save] => 1                                     [steal_lock] => 1                                     [undelete] => 1                                     [unpublish] => 1                                     [view] => 1                                 )                          )                      [2] => array                         (                             [principal] => 22                             [authority] => 9999                             [policy] => array                                 (                                     [add_children] => 1                                     [create] => 1                                     [copy] => 1                                     [delete] => 1                                     [list] => 1                                     [load] => 1                                     [move] => 1                                     [publish] => 1                                     [remove] => 1                                     [save] => 1                                     [steal_lock] => 1                                     [undelete] => 1                                     [unpublish] => 1                                     [view] => 1                                 )                          )                  )          )  )  

i using series of foreach(){foreach(){foreach(){}}} seemed messy , inefficient. having trouble getting head around this. ideas?

a recursive function should trick:

$values = array(17, 6, 3, 2, 5);  function find($array, &$values) {     foreach ($array $key => $element) {         if (is_array($element)) {             find($element, $values);         }          elseif ($key == 'principal') {             foreach ($values $value) {                 if ($element == $value) {                     echo 'found' . php_eol;                     // stuff                 }             }         }     } }  find($array, $values);