Cakephp: Два массива в петле foreach?

Question

У меня есть 2 массива. 1 выборка из базы данных, а другая - на странице просмотра. Я разрабатываю онлайн-сайт тестового экзамена, поэтому мне нужно проверить, правильно ли он указан пользователем или нет. Вот 1-й.

Array 
    (
     [0] => Array 
      (
       [Question] => Array 
        (
         [id] => 51f92e34-c5a8-4de3-b264-0ff0d0483c4c 
         [aptitude_id] => 51f92441-d510-4c3d-85e3-0ff0d0483c4c 
         [paper_id] => 51f924cc-a158-441e-9119-0ff0d0483c4c 
         [qus] => What is ur name? 
         [slug] => name-find 
         [image] => 
         [opt1] => x 
         [opt2] => y 
         [opt3] => a 
         [opt4] => b 
         [opt5] => c 
         [answer_id] => 4 
         [description] => 
         [ansimage] => 
        ) 

       [Aptitude] => Array 
        (
         [id] => 51f92441-d510-4c3d-85e3-0ff0d0483c4c 
         [name] => php 
         [slug] => php 
        ) 

       [Paper] => Array 
        (
         [id] => 51f924cc-a158-441e-9119-0ff0d0483c4c 
         [aptitude_id] => 51f92441-d510-4c3d-85e3-0ff0d0483c4c 
         [name] => aptitude1 
         [slug] => aptitude1 
        ) 

       [Answer] => Array 
        (
         [id] => 4 
         [name] => D 
        ) 

      ) 

     [1] => Array 
      (
       [Question] => Array 
        (
         [id] => 51fe4098-c344-4790-9e46-0fb4d0483c4c 
         [aptitude_id] => 51f92441-d510-4c3d-85e3-0ff0d0483c4c 
         [paper_id] => 51f924cc-a158-441e-9119-0ff0d0483c4c 
         [qus] => Place? 
         [slug] => place 
         [image] => 
         [opt1] => ss 
         [opt2] => sss 
         [opt3] => ss 
         [opt4] => ss 
         [opt5] => ss 
         [answer_id] => 3 
         [description] => 
         [ansimage] => 
        ) 

       [Aptitude] => Array 
        (
         [id] => 51f92441-d510-4c3d-85e3-0ff0d0483c4c 
         [name] => php 
         [slug] => php 
        ) 

       [Paper] => Array 
        (
         [id] => 51f924cc-a158-441e-9119-0ff0d0483c4c 
         [aptitude_id] => 51f92441-d510-4c3d-85e3-0ff0d0483c4c 
         [name] => aptitude1 
         [slug] => aptitude1 
        ) 

       [Answer] => Array 
        (
         [id] => 3 
         [name] => C 
        ) 

      ) 

     [2] => Array 
      (
       [Question] => Array 
        (
         [id] => 51fe40ad-9ddc-4f07-94dc-0fb4d0483c4c 
         [aptitude_id] => 51f92441-d510-4c3d-85e3-0ff0d0483c4c 
         [paper_id] => 51f924cc-a158-441e-9119-0ff0d0483c4c 
         [qus] => hayywep? 
         [slug] => dada 
         [image] => 
         [opt1] => a 
         [opt2] => a 
         [opt3] => a 
         [opt4] => a 
         [opt5] => a 
         [answer_id] => 3 
         [description] => 
         [ansimage] => 
        ) 

       [Aptitude] => Array 
        (
         [id] => 51f92441-d510-4c3d-85e3-0ff0d0483c4c 
         [name] => php 
         [slug] => php 
        ) 

       [Paper] => Array 
        (
         [id] => 51f924cc-a158-441e-9119-0ff0d0483c4c 
         [aptitude_id] => 51f92441-d510-4c3d-85e3-0ff0d0483c4c 
         [name] => aptitude1 
         [slug] => aptitude1 
        ) 

       [Answer] => Array 
        (
         [id] => 3 
         [name] => C 
        ) 

      ) 

    ) 

and 



    Array 
    (
     [51f92e34-c5a8-4de3-b264-0ff0d0483c4c] => 3 
     [51fe4098-c344-4790-9e46-0fb4d0483c4c] => 3 
     [51fe40ad-9ddc-4f07-94dc-0fb4d0483c4c] => 3 
    ) 

я написал этот код

foreach($res as $res1): 

foreach($ans as $ans1): 
if($res1['Question']['answer_id']==$ans1) 
{ 
print_r($res1['Question']['id']); 

} 
endforeach; 
endforeach; 

Выход:

51f92e34-c5a8-4de3-b264-0ff0d0483c4c 
51f92e34-c5a8-4de3-b264-0ff0d0483c4c 
51f92e34-c5a8-4de3-b264-0ff0d0483c4c 
51fe4098-c344-4790-9e46-0fb4d0483c4c 
51fe4098-c344-4790-9e46-0fb4d0483c4c 
51fe4098-c344-4790-9e46-0fb4d0483c4c 
51fe40ad-9ddc-4f07-94dc-0fb4d0483c4c 
51fe40ad-9ddc-4f07-94dc-0fb4d0483c4c 
51fe40ad-9ddc-4f07-94dc-0fb4d0483c4c 

как удалить дублирование?

Answer 1

Попробуйте array_unique

$_results = array(); 
    foreach($res as $res1): 

    foreach($ans as $ans1): 
    if($res1['Question']['answer_id']==$ans1) 
    { 
    $_results[] = $res1['Question']['id']; 

    } 
    endforeach; 
    endforeach; 

    $results = array_unique($_results); 
    pr($results);