使用PHP MySQL的

Question

我點名低於

1. 講座（lec_id，名稱，描述）
2. 測試（爲test_id，TEST_NAME，lec_id，日期）
3. 問題三個表（q_id，q_name創建嵌套的JSON ，q_desc，爲test_id）

我要生成這樣

{ 
"lec_name": "Math", 
"description": "Can you identify these brands by the background color?", 
"test": [ 
    { 
     "name": "Algebra", 
     "date": "10-6-2017", 
     "question": [ 
      { 
       "q_name": "question 1", 
       "description": "Lorem Ipsum is simply dummy text of the printing", 
      }, 
      { 
       "q_name": "question 2", 
       "description": "Lorem Ipsum is simply dummy text of the printing", 
      }, 
      { 
       "q_name": "question 3", 
       "description": "Lorem Ipsum is simply dummy text of the printing", 
      } 
     ] 
    } 


] } 

JSON響應

但我得到這樣

[ 
    [ 
     { 
      "algebra": "2017-02-28" 
     } 
    ], 
    { 
     "question 1": "Lorem Ipsum is simply dummy text of the printing" 
    }, 
    { 
     "0": "Math", 
     "1": "1", 
     "name": "Math", 
     "lec_id": "1" 
    }, 
    [ 
     { 
      "trigonometry": "2017-02-28" 
     } 
    ], 
    { 
     "question 2": "Lorem Ipsum is simply dummy text of the printing" 
    }, 
    { 
     "0": "Chemistry", 
     "1": "2", 
     "name": "Chemistry", 
     "lec_id": "2" 
    }, 
    [ 
     { 
      "Bio test 1": "2017-02-26" 
     } 
    ], 
    { 
     "question 3": "Lorem Ipsum is simply dummy text of the printing" 
    }, 
    { 
     "0": "Physics", 
     "1": "3", 
     "name": "Physics", 
     "lec_id": "3" 
    }, 
    [ 
     { 
      "Bio test 2": "2017-02-28" 
     } 
    ], 
    { 
     "question 4": "Lorem Ipsum is simply dummy text of the printing" 
    }, 
    { 
     "0": "Biology", 
     "1": "4", 
     "name": "Biology", 
     "lec_id": "4" 
    } 
] 

這裏是我的代碼，

$sql = "SELECT name, lec_id FROM lecture"; 

$sqlRun = mysqli_query($conn , $sql); 
//var_dump($sqlRun); 
//echo $sqlRun;  
$json = array(); 
$total_records = mysqli_num_rows($sqlRun); 

if($total_records > 0){ 
    while($row = mysqli_fetch_array($sqlRun)){ 
     $row_array= array(); 


     $qus_pk = $row['lec_id']; 
     $lec_desc = ''; 
     $lec_name = ''; 

     $option_qry = mysqli_query($conn, "SELECT test_name, date, test_id FROM test WHERE test_id= $qus_pk"); 
     //$option_qry = mysqli_query($conn, "SELECT t.name"); 
     while($opt_fet = mysqli_fetch_array($option_qry)){ 
      $row_array[]= array(
       $opt_fet['test_name'] => $opt_fet['date'], 

      ); 
      $quest_array = array(); 
      $quest_pk = $opt_fet['test_id']; 
      $test_query = mysqli_query($conn, "SELECT q_name, q_desc FROM question WHERE q_id = $quest_pk"); 
      while($test_fet = mysqli_fetch_array($test_query)){ 
       $quest_array= array(
        $test_fet['q_name'] => $test_fet['q_desc'], 
       ); 
      } 
     } 
     array_push($json, $row_array, $quest_array); 
     $json[] = $row; 
    } 
} 


echo json_encode($json); 

Answer 1

通過這種改變你的代碼。

if($total_records > 0){ 
    $i = 0; 
    while($row = mysqli_fetch_array($sqlRun)){ 
     $row_array= array(); 
     $qus_pk = $row['lec_id']; 
     $json[$i]['lec_name'] = $row['name'];  
     $json[$i]['description'] = $row['description'];  

     $option_qry = mysqli_query($conn, "SELECT test_name, date, test_id FROM test WHERE test_id= $qus_pk"); 
     //$option_qry = mysqli_query($conn, "SELECT t.name"); 
     while($opt_fet = mysqli_fetch_array($option_qry)){ 
      $json[$i]['test']['name'] = $opt_fet['name']; 
      $json[$i]['test']['date'] = $opt_fet['date']; 

      $quest_array = array(); 
      $quest_pk = $opt_fet['test_id']; 
      $test_query = mysqli_query($conn, "SELECT q_name, q_desc FROM question WHERE q_id = $quest_pk"); 
      $j = 0; 
      while($test_fet = mysqli_fetch_array($test_query)){ 
       $json[$i]['test']['question'][$j] = array('q_name' => $test_fet['q_name'], 'description' => $test_fet['q_desc']); 
       $j++; 
      } 
     } 
     $i++; 
    } 
} 


echo json_encode($json);