How can one retrieve POST data unaltered using fopen('php://input', 'r') and what are the limitations?

When using fopen('php://input', 'r') in PHP to retrieve POST data unaltered, you need to read the raw input stream directly. This allows you to access the raw POST data without any processing. However, this method has limitations, such as not being able to access multipart/form-data uploads or other PHP input handling mechanisms. 

// Retrieve POST data unaltered using fopen('php://input', 'r')
$rawData = file_get_contents('php://input');

// Process the raw data as needed
// For example, you can parse JSON data
$data = json_decode($rawData, true);

// Use the data as needed
var_dump($data);

Keywords

PHP fopen php://input POST data limitations

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