How to convert PHP array to JSON string array

In WEB development, it is often necessary to convert PHP arrays into JSON arrays to achieve better data interaction. PHP provides a very simple way to achieve this. In this article, we will learn how to convert PHP array to JSON string array.

First, we need to understand what JSON is.

JSON, JavaScript Object Notation, is a lightweight data exchange format. JSON can be used to transmit data between the server and the client, and can also be used to store data. JSON's syntax is based on JavaScript's object syntax, but it can be used by other languages ​​that support JSON syntax.

Let’s look at how to convert a PHP array into a JSON string array. We can use PHP's built-in function json_encode(). json_encode()The function converts PHP to a string in JSON format. Just pass the array as a parameter to the json_encode() function.

Code Example:

    <?php
        $array = array(
            &#39;name&#39; => 'Jack',
            'age' => 22,
            'gender' => 'male'
        );
        $json = json_encode($array); 
        echo $json;
    ?>

In this example, we create an array named '$array', which contains three elements: 'name', 'age' and ' gender'. Then we use the json_encode() function to convert the array into a JSON format string. Finally, we print the JSON string to the browser.

Output result:

{"name":"Jack","age":22,"gender":"male"}

This output result is a JSON array.

It should be noted that when we convert a PHP array into a JSON string, if the array contains Chinese, we need to use the second parameter of the json_encode() function to ensure that the encoding is utf-8.

Suppose we generate the following array:

$array = array(
            'name' => '张三',
            'age' => 22,
            'gender' => '男'
        );

At this time we need to execute the following code:

$json = json_encode($array, JSON_UNESCAPED_UNICODE);
echo $json;

Here, the second parameter provides an option to disable the Non-ASCII and non-control characters are converted to automatic escapes of their escape sequences.

Summary

PHP provides a very simple way to convert a PHP array into a JSON string array. Just use the json_encode() function. It should be noted that when the array contains Chinese characters, the second parameter of the json_encode() function must be used to ensure that the encoding is utf-8. JSON is a lightweight data exchange format and one of the most commonly used data exchange forms in WEB development.

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