Convert php object to json Chinese garbled code

When doing web development, JSON is often used to convert objects into JSON data and transmit it asynchronously through AJAX. However, when using the PHP background for JSON formatted output, you may encounter Chinese garbled characters after the object is converted to JSON format. This article explains how to resolve this issue.

Problem Description

In the PHP code, we use the json_encode() function to convert the object into a JSON format string, and then pass echo output. However, when JSON contains Chinese characters, garbled characters will appear, as shown in the following figure:

Clear Chinese characters are converted into garbled characters, which is harmful to users and developers. All unfriendly. Next, we will introduce three solutions.

Solution

Method 1: Manually encode the Chinese

and add json_encode()-> before the json_encode() function mb_convert_encoding(), manually encode Chinese into utf-8.

The sample code is as follows:

<?php
$arr = [
    'name' => '张三',
    'age' => 18,
    'gender' => '男'
];
echo mb_convert_encoding(json_encode($arr, JSON_UNESCAPED_UNICODE), 'UTF-8');
?>

After adding this piece of code, the Chinese in the output string will be correctly converted to utf-8 encoding instead of garbled characters.

Method 2: Set the parameters of json_encode()

Add the JSON_UNESCAPED_UNICODE parameter in the json_encode() function to tell json_encode() The function does not encode Chinese into Unicode, just keep the Chinese.

The sample code is as follows:

<?php
$arr = [
    'name' => '张三',
    'age' => 18,
    'gender' => '男'
];
echo json_encode($arr, JSON_UNESCAPED_UNICODE);
?>

After adding this parameter, the Chinese in the output JSON will be output correctly instead of garbled characters.

Method 3: Modify PHP core settings

In the PHP core settings, there is a parameter default_charset, which indicates the default character encoding used when outputting some text. If this parameter is set to UTF-8, Chinese will be correctly encoded when outputting JSON.

The sample code is as follows:

<?php
ini_set('default_charset', 'utf-8');
$arr = [
    'name' => '张三',
    'age' => 18,
    'gender' => '男'
];
echo json_encode($arr);
?>

Put this code in the script that needs to output JSON to ensure that the Chinese in JSON will not be garbled.

Conclusion

When doing web development, it is very common to use JSON format for data transmission. In PHP, when using the json_encode() function to serialize an object into a string in JSON format, Chinese garbled characters may appear. This article introduces three solutions: manually encoding Chinese, setting the parameters of json_encode() and modifying the default_charset parameter in the PHP core settings. These methods can effectively solve the problem of JSON Chinese garbled characters, and the specific use can be selected according to the actual situation.

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