[英]Php JSON Response Array
我有这个PHP代码。 如您所见,我通过showallevents函数查询mysql数据库。 我将$ result返回到$ event变量。 通过while循环,我将从事件中获取的值分配给响应数组,并且每次循环发生时,行都存储在数据数组中。 当然,我在某个地方失败了,因为尽管我得到了正确数量的响应,但我在json上获得的所有值都是“空”。 它还告诉我有关JSONarray的某些信息无法转换为jsonobject
if (isset($_POST['tag']) && $_POST['tag'] != '')
{
// get tag
$tag = $_POST['tag'];
// include db handler
require_once 'include/DB_Functions.php';
$db = new DB_Functions();
// response Array
$response = array("tag" => $tag, "success" => 0, "error" => 0);
// check for tag type
if ($tag == 'showallevents')
{
// Request type is show all events
// show all events
$event = $db->showallevents();
if ($event != false)
{
$data = array();
while($row = mysql_fetch_assoc($event))
{
$response["success"] = 1;
$response["uid"] = $event["uid"];
$response["event"]["date"] = $event["date"];
$response["event"]["hours"] = $event["hours"];
$response["event"]["store_name"] = $event["store_name"];
$response["event"]["event_information"] = $event["event_information"];
$response["event"]["event_type"] = $event["event_type"];
$response["event"]["Phone"] = $event["Phone"];
$response["event"]["address"] = $event["address"];
$response["event"]["created_at"] = $event["created_at"];
$response["event"]["updated_at"] = $event["updated_at"];
$data[]=$response;
}
echo json_encode($data);
}
else
{
// event not found
// echo json with error = 1
$response["error"] = 1;
$response["error_msg"] = "Events not found";
echo json_encode($response);
}
}
else
{
echo "Access Denied";
}
}
?>
DB_Functions.php
<?php
class DB_Functions
{
private $db;
//put your code here
// constructor
function __construct()
{
require_once 'DB_Connect.php';
// connecting to database
$this->db = new DB_Connect();
$this->db->connect();
}
// destructor
function __destruct()
{
}
/**
* Select all events that are after yesterday.
*/
public function showallevents()
{
$result = mysql_query("SELECT * FROM events WHERE date >= CURDATE()");
return($result);
}
}
?>
好的帮助我将所有数据放入数组的代码是
$data = array();
while($row = mysql_fetch_assoc($event))
{
$response["success"] = 1;
$response["event"]= $row;
$data[]=$response;
}
echo json_encode($data);
您的$response
变量是什么? 在PHP中创建关联数组,使用=>
而不是=
例如:
$array = ('key1' => 'value1', 'key2' => 'value2');
您已经合并了两个独立的代码段,并弄得一团糟,其结果尚不清楚。
您可以通过两种方式创建关联数组:
$array = (key=>value, key2=>value2);
您还可以使用:
$array[key]=value;
$array[key2]=value2;
注意,“键”和“值”都是变量。 您可以在此处使用字符串,也可以从其他地方传入变量。
当做类似的事情时,我使用以下方法:
$response["success"] = 1;
$response["uid"] = $event["uid"];
$response["event"]["date"] = $event["date"];
$response["event"]["hours"] = $event["hours"];
$response["event"]["store_name"] = $event["store_name"];
$response["event"]["event_information"] = $event["event_information"];
$response["event"]["event_type"] = $event["event_type"];
$response["event"]["Phone"] = $event["Phone"];
$response["event"]["address"] = $event["address"];
$response["event"]["created_at"] = $event["created_at"];
$response["event"]["updated_at"] = $event["updated_at"];
$data[]=$response;
如果只想返回所有数组,可以代替mysql_fetch_row使用mysql_fetch_assoc吗?
if ($tag == 'showallevents')
{
// Request type is show all events
// show all events
$event = $db->showallevents();
if ($event != false)
{
$data = array();
while($row = mysql_fetch_assoc($event))
{
$data[] = $row;
echo json_encode($data);
}
else
{
// event not found
// echo json with error = 1
$response["error"] = 1;
$response["error_msg"] = "Events not found";
echo json_encode($response);
}
}
else
{
echo "Access Denied";
}
}
?>
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