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How to receive JSON in PHP and convert to array
- PHPzOriginal
- 2023-04-18 10:25:48777browse
In PHP, it is usually necessary to receive JSON data sent by other applications or front-ends and convert it into an array for subsequent processing. This article will introduce how to receive JSON and convert it into an array in PHP.
- Receive JSON data
In PHP, you can receive JSON data passed by the front end through the $_POST or $_GET global variable. The following example transmits and receives JSON data through POST:
$json = file_get_contents('php://input');
Detailed explanation:
- file_get_contents is a PHP built-in function used to read file contents;
- Here, we use PHP's input stream php://input to read the data submitted by POST in the form of a string;
- Finally assign the read string to a variable.
- Parsing JSON data
Next, we need to convert the read JSON string into an array in PHP. PHP provides the built-in function json_decode Used to convert JSON data into PHP arrays. Specific examples are as follows:
$data = json_decode($json, true);
In the above code, we pass the read JSON data to the json_decode function. The second parameter is set to true, which means that an associative array will be returned, otherwise an object will be returned.
Note: If the JSON format is incorrect, the parsing process may fail, and json_decode will return null. Therefore, be sure to ensure that the JSON data format is correct before parsing.
- Full example
Here is a complete implementation example:
// 从输入流中读取json数据
$json = file_get_contents('php://input');
// 解析json为数组
$data = json_decode($json, true);
// 打印数组内容
print_r($data);
- Summary
In PHP Receiving and parsing JSON data becomes very simple. This is done by reading a JSON string from the input stream and converting it into an array using the built-in json_decode function. At the same time, you must ensure the correctness of the data format before receiving data to avoid parsing errors.
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