无法合并2个JSON结果并从PHP脚本获取响应

我试图从select语句中获取一个结果，我使用了两条语句，并希望得到两个输出的JDON响应。就这些

问题：我正在测试Chrome Postman，它正在显示结果

[
null,
null
]

下面是我的php代码；我哪里做错了

<?php
    header('Access-Control-Allow-Origin: *');
    header('Access-Control-Allow-Methods: GET, POST, OPTIONS');
    header('Access-Control-Allow-Headers: Content-Type,x-prototype-version,x-requested-with');
    header('Cache-Control: max-age=900');
    header("Content-Type: application/json"); // tell client that we are sending json data

    define("DB_USR","erSKJV");
    define("DB_PsAS","T");
    define("DB","ipaddress/orcl.profits");
    $conn = oci_connect(DB_USR,DB_PAS,DB);

    if (!$conn) 
    {
        $e = oci_error();
        $result["message"] = $e['message'];
        echo json_encode($result);
        exit(1);
    } 

        $loggedinuser = $_POST['loggedinuser'];

        $stmt = "select count(*) as taskgiven from admtask where CLOSE_DT is null and primary='".$loggedinuser."' ";

        $stmt1 = "select count(*) as mytask from admtask where CLOSE_DT is null and entusr='".$loggedinuser."' ";

        $result=oci_parse($conn,$stmt);
        $ex2=oci_execute($result);

        while ($row=oci_fetch_assoc($result))
        {
          $stmta[] = $row;
        }
         json_encode($stmta);

        $result1=oci_parse($conn,$stmt1);
        $ex2=oci_execute($result1);

        while ($row1=oci_fetch_assoc($result1))
        {
          $stmtb[] = $row1;
        }
         json_encode($stmtb);

        $final[] = json_decode($stmta,true);
        $final[] = json_decode($stmtb,true);
        $json_merge = json_encode($final);

        echo json_encode($json_merge);


?>

---

json\u encode返回json的字符串。您需要在前两次编码期间将其分配给变量

while ($row=oci_fetch_assoc($result))
    {
      $stmta[] = $row;
    }
    $stmta =  json_encode($stmta);

    $result1=oci_parse($conn,$stmt1);
    $ex2=oci_execute($result1);

    while ($row1=oci_fetch_assoc($result1))
    {
      $stmtb[] = $row1;
    }
     $stmtb = json_encode($stmtb);

您不应该在包含json的数组上调用
json\u encode（）
。将原始数组放入容器数组中，然后对整个对象调用
json\u encode（）

$final = array($stmta, $stmtb);
echo json_encode($final);

检查$stmta和$stmtb在i
json_编码（$stmta）时返回什么
然后显示使用此代码的结果，但它在json数据之间提供斜杠。如何删除这些斜杠。请发布您的结果“[[\“任务\”：\“25\”}]，“{\“我的任务\”：\“80\”}]”仍然有问题，请尝试相同的方法，尽快让您知道结果