如何将数据从 PHP 返回到 jQuery ajax 调用
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How to return data from PHP to a jQuery ajax call
提问by user191688
I am posting some data using ajax. I want to manipulate that data and return to to the calling jQuery script.
我正在使用ajax发布一些数据。我想操作该数据并返回到调用 jQuery 脚本。
Here is my jQuery:
这是我的 jQuery:
$.ajax({
type: "POST",
url: "somescript.php",
datatype: "html",
data: dataString,
success: function() {
//do something;
}
});
Here is my somescript.php on the server:
这是我在服务器上的 somescript.php:
<?php
//manipulate data
$output = some_function(); //function outputs a comma-separated string
return $output;
?>
Am I doing this correctly on the server side, and how do I access the return string when the ajax call completes?
我是否在服务器端正确执行此操作,以及如何在 ajax 调用完成时访问返回字符串?
回答by user191688
I figured it out. Need to use echo in PHP instead of return.
我想到了。需要在 PHP 中使用 echo 而不是 return。
<?php
$output = some_function();
echo $output;
?>
And the jQ:
和 jQ:
success: function(data) {
doSomething(data);
}
回答by Nick Craver
It's an argument passed to your success function:
这是传递给您的成功函数的参数:
$.ajax({
type: "POST",
url: "somescript.php",
datatype: "html",
data: dataString,
success: function(data) {
alert(data);
}
});
The full signature is success(data, textStatus, XMLHttpRequest)
, but you can use just he first argument if it's a simple string coming back. As always, see the docs for a full explanation:)
完整的签名是success(data, textStatus, XMLHttpRequest)
,但如果它是一个简单的返回字符串,您可以只使用他的第一个参数。与往常一样,请参阅文档以获得完整的解释:)
回答by Aaron
Yes, the way you are doing it is perfectly legitimate. To access that data on the client side, edit your success function to accept a parameter: data.
是的,你这样做是完全合法的。要在客户端访问该数据,请编辑您的成功函数以接受一个参数:data。
$.ajax({
type: "POST",
url: "somescript.php",
datatype: "html",
data: dataString,
success: function(data) {
doSomething(data);
}
});
回答by DEEPAK
based on accepted answer
基于接受的答案
$output = some_function();
echo $output;
if it results array then use json_encode it will result json array which is supportable by javascript
如果结果数组然后使用 json_encode 它将导致 javascript 支持的 json 数组
$output = some_function();
echo json_encode($output);
If someone wants to stop execution after you echo some result use exit method of php. It will work like return keyword
如果有人想在您回显某些结果后停止执行,请使用 php 的退出方法。它会像 return 关键字一样工作
$output = some_function();
echo $output;
exit;