計數關聯數組的數組值不工作

我想計算一個關聯數組的值，但它沒有做我想做的事。計數關聯數組的數組值不工作

我從數據庫中提取數據，因爲我需要所有問題的答案。數據庫中的答案在答案1，答案2，答案3等字段中，最多可回答20。

我想要做的是統計包含數據的字段的數量，並忽略沒有任何數據的字段。

這裏是我到目前爲止的代碼：

<?php 
     $results = $db->get_results("SELECT * FROM wellness_hra_questions WHERE category='general' AND level='1' AND gender='All' AND active='yes' ORDER BY id ASC"); 
     foreach($results as $result){ 
      $id = $result->id; 
     } 

        $answers = $db->get_results("SELECT answer1, answer2, answer3, answer4, answer5, answer6, answer7, answer8, answer9, answer10, answer11, answer12, answer13, answer14, answer15, answer16, answer17 FROM wellness_hra_questions WHERE id=".$id.""); 
         //$db->debug(); 


         for($i=1; $i <= 17; $i++) { 

          foreach($answers as $a_result){ 
           $answer = 'answer'; 
           $answer_id = $answer.$i; 
           $answer_id2 = $a_result->$answer_id; 

           $answer1 = $a_result->answer1; 
           $array1 = array('1'=>''.$answer1.''); 

           $answer2 = $a_result->answer2; 
           $array2 = array('2'=>''.$answer2.''); 

           $answer3 = $a_result->answer3; 
           $array3 = array('3'=>''.$answer3.''); 

           $answer4 = $a_result->answer4; 
           $array4 = array('4'=>''.$answer4.''); 

           $answer5 = $a_result->answer1; 
           $array5 = array('5'=>''.$answer5.''); 

           $answer6 = $a_result->answer6; 
           $array6 = array('1'=>''.$answer6.''); 
          } 

           if($answer1 == TRUE){ 
            $newvalue1 = $array1; 
           } 
           if($answer2 == TRUE){ 
            $newvalue2 = $array2; 
           } 
           if($answer3 == TRUE){ 
            $newvalue3 = $array3; 
           } 
           if($answer4 == TRUE){ 
            $newvalue4 = $array4; 
           } 
           if($answer5 == TRUE){ 
            $newvalue1 = $array5; 
           } 
           if($answer1 == TRUE){ 
            $newvalue6 = $array6; 
           } 

           $newarray = array_merge($newvalue1,$newvalue2, $newvalue3, $newvalue4, $newvalue5); 

           $count = count($newarray, COUNT_RECURSIVE); 
           echo $count; 
         } 
?>

來源

2016-09-23 Jono

看起來這個應用程序可以通過將answerX列移動到它自己的表中來改善數據庫結構。 – Kwebble

假設你的邏輯的其餘部分是正確的，那麼這應該工作：'$ count = array_sum（array_map（function（$ v）{return（$ v！==''&& $ v！== null？1：0）; }，$ new_array））;' – MonkeyZeus

您這裏需要一個代碼清理 - 如果你想要的是一個數，而array_merge僅僅是爲了這個目的，本應做什麼，我相信你會喜歡做的：

for($i=1; $i <= 17; $i++) { 
    foreach($answers as $a_result){ 

     $answer_id = 'answer'.$i; 
     $answer_id2 = $a_result->$answer_id; 

     $thisCount = 0; 
     $newarray = array(); 
     for($j = 1; $j < 7; $j++) { 
      $var = "answer" . $j; 
      $$var = ${"a_result->answer" . $j}; 

      if (strlen($$var) > 0) { 
       $arrayID = "array" . $j; 
       $$arrayID = array((string)$j => $$var);// I don't think you need this but if you do included array_merge here 
       array_merge($newarray, $$arrayID); 
       $thisCount++; 
      } 
     } 

     echo $count; 
     print_r($newarray); // show the contents of the merged arrays 
    }// end foreach 
}//end for

來源

2016-09-23 15:59:16

計數關聯數組的數組值不工作

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