AJAX调用PHP文件：返回值为空 [英] AJAX Call to PHP file: return value is empty

问题描述

我有一个简单的ajax调用：

I have a simple ajax call:

function init() {
    $.ajax({
        url: "./myFolder/user.php",
        data: {
            action: "init"
        },
        type: "post",
        success: function (output) {
            console.log("Success");
            console.log("Output: " + output);
        }
    });
}

PHP init 方法被调用，只需返回一些json数据：

The PHP init method gets called and simply should return some json data:

function init() {
    $arr = array(
        array(
            "region" => "valore",
            "price" => "valore2"
        ),
        array(
            "region" => "valore",
            "price" => "valore2"
        ),
        array(
            "region" => "valore",
            "price" => "valore2"
        )
    );

    return json_encode($arr);
}

但我的控制台说：

Success
Output:

所以输出变量为空。我的json数据在哪里？

So the output variable is empty. Where is my json data?

推荐答案

在 user.php 页面上你需要这样做： -

On user.php page you need to do :-

function init() {
        $arr = array(
            array(
                "region" => "valore",
                "price" => "valore2"
            ),
            array(
                "region" => "valore",
                "price" => "valore2"
            ),
            array(
                "region" => "valore",
                "price" => "valore2"
            )
        );

        echo  json_encode($arr);
    }

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