Use PHP's json_encode() function to convert an array or object to a JSON string and encode Chinese characters to UTF-8

Use PHP's json_encode() function to convert an array or object into a JSON string and encode Chinese characters into UTF-8

In PHP, we can use The json_encode() function converts an array or object into a JSON string. By default, the json_encode() function encodes Chinese characters into Unicode characters, but sometimes we want to encode Chinese characters into UTF-8 for better processing and display of Chinese characters. This article will introduce how to use PHP's json_encode() function to encode Chinese characters into UTF-8.

First, we create an array or object containing Chinese characters:

$data = array(
    'name' => '张三',
    'age' => 25,
    'gender' => '男'
);

Or we can also use an object:

class Student {
    public $name;
    public $age;
    public $gender;
}

$student = new Student();
$student->name = '张三';
$student->age = 25;
$student->gender = '男';

Next, we can use json_encode() The function converts an array or object into a JSON string, and sets the parameters JSON_UNESCAPED_UNICODE and JSON_UNESCAPED_SLASHES to encode Chinese characters into UTF-8:

$json = json_encode($data, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);

or use an object:

$json = json_encode($student, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);

in the above code , the parameter JSON_UNESCAPED_UNICODE is used to disable the conversion of Chinese characters into Unicode characters, and the parameter JSON_UNESCAPED_SLASHES is used to disable escaping slash characters.

Finally, we can print out the JSON string to view the result:

echo $json;

In this way, we can get the JSON string encoded as UTF-8:

{"name":"张三","age":25,"gender":"男"}

By converting Chinese The character encoding is UTF-8, and we can ensure that the JSON string can transmit and display Chinese characters correctly.

Summary:
This article introduces how to use PHP's json_encode() function to convert an array or object into a JSON string and encode Chinese characters into UTF-8. By setting the parameters JSON_UNESCAPED_UNICODE and JSON_UNESCAPED_SLASHES, we can prohibit converting Chinese characters to Unicode characters and escaping slash characters. This ensures that the JSON string handles and displays Chinese characters correctly.

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