Question

我目前正在尝试使用ajax从数据库（sql，phpmyadmin）发送一个2d数组。

我的ajax函数看起来像这样:(它是在php中生成的）

$.ajax({
        type: \"POST\",
        url: \"resultQuizGet.php\",
        data: \"getAnswer=\"+question+\"\", //question is just a int variable
        success: function(msg) {
           alert(\"Data Saved: \" + msg);
           }
 });

我的resultQuizGet.php文件看起来像

 $sql = "SELECT `quiz`.question,`quiz`.rightAnswer 
 FROM `quiz` 
 WHERE `quiz`.quizID=:qID";
$stmt = $dbh->prepare($sql);
$stmt->bindParam(":qID", $_POST['quiz']);
$stmt->execute();
$resultsQuiz = $stmt->fetchAll();
echo ...

现在我需要做什么来接收2d数组而不仅仅是普通字符串。

我希望msg变量是一个等于$ resultsQuiz的二维数组

Answer 1

按如下方式修改您的php，将数据输出为json格式的字符串：

$sql = "SELECT `quiz`.question,`quiz`.rightAnswer 
 FROM `quiz` 
 WHERE `quiz`.quizID=:qID";
$stmt = $dbh->prepare($sql);
$stmt->bindParam(":qID", $_POST['quiz']);
$stmt->execute();
$resultsQuiz = $stmt->fetchAll();
echo json_encode($resultsQuiz);

然后，修改你的jQuery，如下所示，将结构化字符串解析回数组/对象：

$.ajax({
        type: "POST",
        url: "resultQuizGet.php",
        data: "getAnswer="+question, //question is just a int variable
        success: function(msg) {
           // Note: if it's not json, this can cause a problem
           var data = $.parseJSON(msg);
           // output to your console so you can see the structure
           console.log(data);
           // Utilize the data somehow
           $.each(data, function(key, arr) {
               // Arr should contain an object / array representing the rows from your php results
               console.log(arr);
               // If your row has a field titled `question`, you can access it one of two ways:
               alert(arr.question); // Object notation
               alert(arr['question']); // Array notation
           });
        }
 });

如何使用ajax发送二维数组？

1 个答案: