2個數組之間的PHP匹配值不同鍵

Question

我已經做了研究，並沒有從這方面得到任何解決方案。所以最終的想法來到Stackoverflow並提出問題。

我有2個陣列象下面這樣：

BigArray

Array 
(
    [0] => Array 
     (
      [id] => 1 
      [category_name] => Accountancy 
      [category_name_vi] => Kế toán 
      [category_id] => 1 
     ) 

    [1] => Array 
     (
      [id] => 2 
      [category_name] => Armed forces 
      [category_name_vi] => Quân đội 
      [category_id] => 2 
     ) 

    [2] => Array 
     (
      [id] => 3 
      [category_name] => Admin & Secretarial 
      [category_name_vi] => Thư ký & Hành chính 
      [category_id] => 3 
     ) 

    [3] => Array 
     (
      [id] => 4 
      [category_name] => Banking & Finance 
      [category_name_vi] => Tài chính & Ngân hàng 
      [category_id] => 4 
     ) 
) 

和SmallArray：

Array 
(
    [0] => Array 
     (
      [id] => 7 
      [category_id] => 2 
      [jobseeker_id] => 1 
     ) 

    [1] => Array 
     (
      [id] => 8 
      [category_id] => 3 
      [jobseeker_id] => 1 
     ) 
) 

好，現在我想從SmallArray鏈路相互匹配category_id分別category_name從BigArray而輸出I只需要SmallArray和之間的匹配值其中SmallArraycategory_id是關鍵和BigArraycategory_name是像下面的值：

匹配的數組：

Array 
    (
     [0] => Array 
      (
       [2] => Armed forces      
      ) 

     [1] => Array 
      (
       [3] => Admin & Secretarial 
      ) 
    ) 

到目前爲止，我已經嘗試array_intersect，2個foreach循環，但沒有運氣。任何建議將是非常讚賞:(

感謝

Answer 1

這應該這樣做：

foreach ($smallArray as $smallKey => $smallElement) { 
    foreach ($bigArray as $bigKey => $bigElement) { 
     if ($bigElement['id'] == $smallElement['category_id']) { 
      $smallArray[$smallKey] = array(
       $bigElement['id'] => $bigElement['category_name'], 
      ); 
      break; // for performance and no extra looping 
     } 
    } 
} 

這些循環後，你有你的$smallArray想要什麼