How to Handle JSON Requests in PHP to Avoid Empty $_POST Arrays?

Handling JSON Requests in PHP

When transmitting data with an AJAX call, setting the contentType to application/json instead of the default x-www-form-urlencoded may result in an empty $_POST array on the PHP server-side. This occurs because x-www-form-urlencoded data is automatically parsed into $_POST, while JSON data is not.

To handle application/json requests in PHP, you need to read the raw JSON input directly from the request body using file_get_contents('php://input'). Here's how you can do it:

<code class="php"><?php var_dump(json_decode(file_get_contents('php://input')));
?></code>

In this example, the file_get_contents('php://input') function reads the raw JSON input from the request body. The json_decode function then decodes the JSON string into a PHP variable, which can be accessed and processed as needed.

By using this approach, you can handle both x-www-form-urlencoded and application/json requests in PHP, ensuring that your server-side code receives and processes the data correctly.

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