如何使用ajax和php for phonegap与mysql数据库连接？

Question

I am working with a simple phonegap application. i need to display contents from mysql. i know that i cannot use php pages for phonegap. instead i use webservices in html to connect with mysql. My ajax webservice using responses is not working.

$.ajax({
    type:"GET",
    url:"config.php",
});

i have the database connection in my config.php file. But the connection to config.php is not at all established. Do i have to include any plugins for ajax or any jscript files. Please do help me.

Answer 1

lets say getdata.php has method to get data from db which includes config.php

$.ajax({
type:"GET",
url:"getdata.php",
dataType: "json",
data: { querystring1: querystringvalue},
success: function (data) {
if(data!=""){
parse json and do whatever you want on success
}else{

show some error when there was no data
}
});

Hope it helps

Answer 2

假设您要检索汽车列表，您需要做的就是将config.php包含在get_cars.php中-然后，当您执行以下操作时，此文件将返回数据库中所有汽车的JSON向它发出AJAX请求。

Answer 3

Assuming getdata.php is returning a JSONP object. This also assumes you are using JQuery.

$.getJSON("url/to/service?callback=?", function(result){
   //interact with result here
});

By denoting a callback you will avoid the issue of the browser blocking cross origin access.

This will allow for a separation of concerns. Your getdata.php can interact with the config.php server side for all database connections while the phonegap page will only have to use getdata.php to populate the page dynamically.

Answer 4

First check if the function where $.ajax({ type:"GET", url:"config.php", }); is kept is getting called or not, if it is then try echoing sumthing in config.php check ur console, the data being pass and the response coming, is it the same u want if so then the connection is establish.

After the connection to config.php is establish then go on and get what is done, now getting the data to the ajax function, you have to echo from config.php in json format which is more appropriate. You can use

.done(function(msg){ }

where msg is the content u echoed from config.php