php - how can i count an element if it appears more than once in the same array? -

how can count element if appears more once in same array?

i tried array_count_values, did not work, beacuse got more 1 key , value in array?

this output array (restlist)

array (  [0] => array ( [restaurant_id] => 47523 [title] => cafe blabla)  [1] => array ( [restaurant_id] => 32144 [title] => test5)  [2] => array ( [restaurant_id] => 42154 [title] => blabla2 )  [3] => array ( [restaurant_id] => 32144 [title] => test5)  [4] => array ( [restaurant_id] => 42154 [title] => blabla2 )  ) 

i want count how many times same element appears in array , add counted value newly created 'key' called hits in same array.

array (  [0] => array ( [restaurant_id] => 47523 [title] => cafe blabla [hits] => 1)  [1] => array ( [restaurant_id] => 32144 [title] => test5 [hits] => 2)  [2] => array ( [restaurant_id] => 42154 [title] => blabla2 [hits] => 2)  ) 

this how tried wanted.

     foreach ($cooltransactions $key)          {             $temparrayoverrestaurants[]= $key['restaurant_id'];         }          $wordsrestaruants = array_count_values($temparrayoverrestaurants);         arsort($wordsrestaruants);      foreach ($wordsrestaruants $key1 => $value1)          {                      $temprestaurantswithhits[] = array(                         'restaurant_id' => $key1,                         'hits' => $value1);              }  foreach ($restlistas $key)  {     foreach ($temprestaurantswithhits $key1)      {         if($key['restaurant_id'] === $key1['restaurant_id'])         {                       $nyspisestedsliste[] = array(                         'restaurant_id' => $key['restaurant_id'],                          'title' => $key['title'],                         'hits' => $key1['hits']);            }     } } 

i know noob way want still new @ php..i hope can help

just try associative array:

$input  = array( /* input data*/ ); $output = array();  foreach ( $input $item ) {   $id = $item['restaurant_id'];    if ( !isset($output[$id]) ) {     $output[$id] = $item;     $output[$id]['hits'] = 1;   } else {     $output[$id]['hits']++;   } } 

and if want reset keys, do:

$outputwithoutkeys = array_values($output);