php 将ajax数据发布到PHP并返回数据
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post ajax data to PHP and return data
提问by billa
How can i post some ajax data to the controller function and get it back? For I want to post one integer to the function, and get another integer (total votes for the item which ID is posted), and on success i want to echo that vote count. I dont know how can i post the "id" to the controller function. Please see my code:
如何将一些ajax数据发布到控制器功能并将其取回？因为我想向函数发布一个整数，并获得另一个整数（发布 ID 的项目的总票数），成功后我想回显该投票数。我不知道如何将“id”发布到控制器功能。请看我的代码：
//post this integet
the_id = $(this).attr('id');
$.ajax({
type: "POST",
data: the_id,
url: "http://localhost/test/index.php/data/count_votes",
success: function(){
//the controller function count_votes returns an integer.
//echo that with the fade in here.
}
});
回答by Rafay
$.ajax({
type: "POST",
data: {data:the_id},
url: "http://localhost/test/index.php/data/count_votes",
success: function(data){
//data will contain the vote count echoed by the controller i.e.
"yourVoteCount"
//then append the result where ever you want like
$("span#votes_number").html(data); //data will be containing the vote count which you have echoed from the controller
}
});
in the controller
在控制器中
$data = $_POST['data']; //$data will contain the_id
//do some processing
echo "yourVoteCount";
Clarification
澄清
i think you are confusing
我觉得你很困惑
{data:the_id}
with
和
success:function(data){
both the dataare different for your own clarity sake you can modify it as
data为了您自己的清晰起见，两者都不同，您可以将其修改为
success:function(vote_count){
$(span#someId).html(vote_count);
回答by Marc B
For the JS, try
对于JS，尝试
data: {id: the_id}
...
success: function(data) {
alert('the server returned ' + data;
}
and
和
$the_id = intval($_POST['id']);
in PHP
在 PHP 中
回答by serialworm
So what does count_votes look like? Is it a script? Anything that you want to get back from an ajax call can be retrieved using a simple echo (of course you could use JSON or xml, but for this simple example you would just need to output something in count_votes.php like:
那么 count_votes 是什么样子的呢？是脚本吗？您想从 ajax 调用中返回的任何内容都可以使用简单的 echo 来检索（当然您可以使用 JSON 或 xml，但对于这个简单的示例，您只需要在 count_votes.php 中输出一些内容，例如：
$id = $_POST['id'];
function getVotes($id){
// call your database here
$query = ("SELECT votes FROM poll WHERE ID = $id");
$result = @mysql_query($query);
$row = mysql_fetch_row($result);
return $row->votes;
}
$votes = getVotes($id);
echo $votes;
This is just pseudocode, but should give you the idea. What ever you echo from count_votes will be what is returned to "data" in your ajax call.
这只是伪代码，但应该给你一个想法。您从 count_votes 回显的内容将是您的 ajax 调用中返回到“数据”的内容。
