`file_get_contents(\'php://input\')` or `$HTTP_RAW_POST_DATA`: Which Method Should I Use for Retrieving JSON Data?

File_get_contents("php://input") Vs $HTTP_RAW_POST_DATA: Retrieving JSON Request Data

In handling JSON request data, developers often face a dilemma between using file_get_contents("php://input") and $HTTP_RAW_POST_DATA. This article examines the pros and cons of both methods, providing guidance on which to choose for optimal results.

file_get_contents("php://input")

file_get_contents("php://input") enables direct access to the raw body of a request. It consumes less memory than $HTTP_RAW_POST_DATA and does not require specific php.ini directives. However, it is not compatible with the "multipart/form-data" enctype.

$HTTP_RAW_POST_DATA

$HTTP_RAW_POST_DATA contains the raw request body, including form data and uploaded files. To use it, one must set "always_populate_raw_post_data" to -ON in php.ini. This method is only effective if the request is not "multipart/form-data."

Choosing Between the Methods

If you are primarily working with JSON data and do not require support for "multipart/form-data," file_get_contents("php://input") is the preferred option due to its simplicity and lower memory footprint. On the other hand, if "multipart/form-data" compatibility is crucial, $HTTP_RAW_POST_DATA is necessary after enabling "always_populate_raw_post_data" in php.ini.

Request Type for Sending JSON Data

Regarding the request type for sending JSON data via XmlHTTPRequest, both GET and POST can be employed. However, the POST method is typically more appropriate as it allows for larger data payloads and is more secure than GET. When using the POST method, ensure that the "Content-Type" header is set to "application/json" to indicate that the data being sent is JSON-encoded.

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