php - Count the number of times a value appears in a multi-dimensional array -


i have simple multi-dimensional array looks below. trying count how many times each value exists in array (i.e. arthritis => 3). have tried different count php functions returns number , not key => value pair. have looked on similar questions, nothing fits simplicity of array.

array(3) {       [0]=>       array(1) {         [0]=>         string(0) "arthritis"       }       [1]=>       array(4) {         [0]=>         string(7) "thyroid"         [1]=>         string(10) " arthritis"         [2]=>         string(11) " autoimmune"         [3]=>         string(7) " cancer"       }       [2]=>       array(6) {         [0]=>         string(7) "anxiety"         [1]=>         string(10) " arthritis"         [2]=>         string(11) " autoimmune"         [3]=>         string(15) " bone , joint"         [4]=>         string(7) " cancer"         [5]=>         string(8) " candida"       }       }  <?php print_r(count($items, count_recursive)); ?>

one way flatten single dimension using array_merge() on sub-arrays, , count values using array_count_values():

$count = array_count_values(call_user_func_array('array_merge', $items));

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