问数据库:获取null结果

EN

    get_all_task.php
<?php

/*
 * Following code will list all the tasks
 */

// array for JSON response
$response = array();

// include db connect class
require_once __DIR__ . '/db_connect.php';

// connecting to db
$db = new DB_CONNECT();

// get all task from my_task table
$result = mysql_query("SELECT *FROM my_task") or die(mysql_error());

// check for empty result
if (mysql_num_rows($result) > 0) {
    // looping through all results
    // task node
    $response["my_task"] = array();

    while ($row = mysql_fetch_array($result)) {
        // temp user array
            $my_task = array();
            $my_task["cid"] = $result["cid"];
            $my_task["cus_name"] = $result["cus_name"];
            $my_task["contact_number"] = $result["contact_number"];
            $my_task["ticket_no"] = $result["ticket_no"];
            $my_task["task_detail"] = $result["task_detail"];

        // push single task into final response array
        array_push($response["my_task"], $my_task);
    }
    // success
    $response["success"] = 1;

    // echoing JSON response
    echo json_encode($response);
} else {
    // no task found
    $response["success"] = 0;
    $response["message"] = "No task found";

    // echo no users JSON
    echo json_encode($response);
}
?>