返回json_object作为数组的正确方法

Question

I have an array populated using an sql statement in the following manner:

$index = 0;

while ($row = sqlsrv_fetch_array($stmt, SQLSRV_FETCH_ASSOC))
{
    $bookname[$index] = ($row['Bookname']);
    $subjectname[$index] = ($row['SubjectName']);
    $index++;
}

When I go to echo json encode the Arrays I get a blank [] when I know it has been populated which is really weird. Am I doing anything wrong in my context

echo json_encode($Bookname,$SubjectName);

Answer 1

You can use json_encode as like that:

<?php
$index = 0;
$data = array();
while ($row = sqlsrv_fetch_array($stmt, SQLSRV_FETCH_ASSOC))
{
    $data[$index]['bookname'] = $row['Bookname'];
    $data[$index]['subjectname'] = $row['SubjectName'];
    $index++;
}
json_encode($data); // encode your array
?>

Answer 2

Try following:

       $index = 0;
       $data = array();
       while ($row = sqlsrv_fetch_array($stmt, SQLSRV_FETCH_ASSOC))
      {
        $data['Bookname'][$index] = $row['Bookname'] 
        $data['SubjectName'][$index] = $row['SubjectName'];
        $index++;

       }
       echo json_encode($data);

Answer 3

You have passed two parameter while calling json_encode function. You batter combine two array in one. Then call the json_encode function like json_encode($combinedArray)