Why is my $_POST array empty after form submission in PHP, and how can I fix it?

Empty $_POST Array After Form Submission in PHP

In a custom Content Management System (CMS), users have encountered an issue where $_POST arrays remain empty upon form submission. This behavior is observed after migrating the application to a production server. While the form data is present in the php://input stream, it is absent in the $_POST and $_REQUEST arrays.

To resolve this issue, it's crucial to determine the content-type headers. If the form is submitted with a JSON content-type (application/json), PHP will not populate the $_POST array. This is because JSON data is handled differently than typical form-encoded data, which is normally handled through $_POST.

To rectify the issue, the following code can be utilized:

$_POST = json_decode(file_get_contents("php://input"), true);

This code reads the JSON data from the php://input stream, decodes it, and assigns it to the $_POST array, thus making the form data accessible for further processing.

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