php - JSON数据集结构

Question

我正在将 mysql 记录创建到 json 数组中，但 json 数据集似乎存在一些问题。 PFB 代码:-

JSON 输出来了:-

[{
    "ID": "1",
    "Coupon_ID": "ABC1",
    "Campaign_ID": "353",
    "Campaign_Name": "Test1",
    "Title": "Test1",
    "Description": "Test1",
    "Category": "Test1",
    "Type": "Coupon",
    "Type_Value": "1231",
    "Tracking_URL": "http://abc1.com",
    "Added_Date": "2016-07-13",
    "Expiry_Date": "2016-07-28"
}][
{
    "ID": "2",
    "Coupon_ID": "ABC2",
    "Campaign_ID": "3532",
    "Campaign_Name": "Test2",
    "Title": "Test2",
    "Description": "Test2",
    "Category": "Test2",
    "Type": "Coupon",
    "Type_Value": "1232",
    "Tracking_URL": "http://abc2.com",
    "Added_Date": "2016-07-13",
    "Expiry_Date": "2016-07-28"
}]

我想要这样的东西:-

 [{
    "ID": "1",
    "Coupon_ID": "ABC1",
    "Campaign_ID": "353",
    "Campaign_Name": "Test1",
    "Title": "Test1",
    "Description": "Test1",
    "Category": "Test1",
    "Type": "Coupon",
    "Type_Value": "1231",
    "Tracking_URL": "http://abc1.com",
    "Added_Date": "2016-07-13",
    "Expiry_Date": "2016-07-28"
}
{
    "ID": "2",
    "Coupon_ID": "ABC2",
    "Campaign_ID": "3532",
    "Campaign_Name": "Test2",
    "Title": "Test2",
    "Description": "Test2",
    "Category": "Test2",
    "Type": "Coupon",
    "Type_Value": "1232",
    "Tracking_URL": "http://abc2.com",
    "Added_Date": "2016-07-13",
    "Expiry_Date": "2016-07-28"
}]

我的意思是 [] 这些括号而不是针对每条记录出现，这些应该只出现一次。

PHP 代码:-

<?php
    header('Content-type: application/json');
    $servername = "localhost";
    $username = "root";
    $password = "";
    $dbname = "couponsdeals";

    // Create connection
    $conn = new mysqli($servername, $username, $password, $dbname);

    // Check connection
    if ($conn->connect_error) {
        die("Connection failed: " . $conn->connect_error);
    }

    $apikey = $_GET['API_KEY'];
    $sql = "SELECT  AFF_ID FROM api WHERE API_KEY= '$apikey' ";

    //$sql1= "SELECT  ID,Coupon_ID,Campaign_ID,Campaign_Name,Title,Description,Category,Type,Type_Value,Tracking_URL,Added_Date,Expiry_Date FROM couponcode_table ";

    $sql1 = "SELECT  * FROM couponcode_table ";
    $result = $conn->query($sql);
    $result1 = $conn->query($sql1);
    if ($result) {
        // output data of each row
        while ($row = $result->fetch_assoc()) {
            $data = $row["AFF_ID"];
            if ($result1) {
                while ($row1 = $result1->fetch_assoc()) {
                    $data1 = $row1["Tracking_URL"];
                    $mydata = explode("&", $data1);
                    if (isset($mydata[2])) {
                        $json1 = array();
                        $mydata2 = $mydata[0] . "&aff_id=" . $data . "&" . $mydata[2];
                        $values = array(
                            'ID' => $row1['ID'],
                            'Coupon_ID' => $row1['Coupon_ID'],
                            'Campaign_ID' => $row1['Campaign_ID'],
                            'Campaign_Name' => $row1['Campaign_Name'],
                            'Title' => $row1['Title'],
                            'Description' => $row1['Description'],
                            'Category' => $row1['Category'],
                            'Type' => $row1['Type'],
                            'Type_Value' => $row1['Type_Value'],
                            'Tracking_URL' => $mydata2,
                            'Added_Date' => $row1['Added_Date'],
                            'Expiry_Date' => $row1['Expiry_Date']

                        );
                        array_push($json1, $values);
                        echo json_encode($json1, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
                    } else {
                        $json = array();
                        $mydata1 = $mydata[0] . "&aff_id=" . $data;
                        $value = array(
                            'ID' => $row1['ID'],
                            'Coupon_ID' => $row1['Coupon_ID'],
                            'Campaign_ID' => $row1['Campaign_ID'],
                            'Campaign_Name' => $row1['Campaign_Name'],
                            'Title' => $row1['Title'],
                            'Description' => $row1['Description'],
                            'Category' => $row1['Category'],
                            'Type' => $row1['Type'],
                            'Type_Value' => $row1['Type_Value'],
                            'Tracking_URL' => $mydata1,
                            'Added_Date' => $row1['Added_Date'],
                            'Expiry_Date' => $row1['Expiry_Date']
                        );
                        array_push($json, $value);
                        echo json_encode($json, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
                    }
                }
            }
        }
    } elseif (!$result) {
        echo "0 results";
    }
    $conn->close();
?>

Answer 1

您需要在 while 循环之外初始化/回显您的 JSON 数组:

$json = array();
while(....) {
    while(....) {
        //.......
        array_push($json, $value);
        //.......
    }
}
echo json_encode($json, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);