我是通过php将SQL数据转化成json的
代码如下,如何添加逗号
$result = $conn->query($sql);
if ($result->num_rows > 0) {
// 输出数据
while($row = $result->fetch_assoc()) {
echo json_encode($row);
// echo "[{\"result\":\"1\"}]";
//echo "[{\"result\":\"1\"}]";
}
} else {
echo "0 结果";
}
$conn->close();
变成如下格式
[{"a":"1","b":"2","c":"3"}{"a":"4","b":"5","c":"6"}]怎么变为
[{"a":"1","b":"2","c":"3"},{"a":"4","b":"5","c":"6"}]