Why is `$HTTP_RAW_POST_DATA` Deprecated in PHP and How Can I Fix the Warning?

Understanding the Deprecation Warning for $HTTP_RAW_POST_DATA

In PHP 5.6.0, a warning message is displayed regarding the deprecation of automatic population of the $HTTP_RAW_POST_DATA variable:

Deprecated: Automatically populating $HTTP_RAW_POST_DATA is deprecated and will be removed in a future version. To avoid this warning set 'always_populate_raw_post_data' to '-1' in php.ini and use the php://input stream instead.

Confusion Over Warning Interpretation

This message has led to confusion, as it suggests that the warning can be suppressed by setting 'always_populate_raw_post_data' to '-1'. However, this is not the case.

Actual Issue

The true issue lies in the fact that setting 'always_populate_raw_post_data' to 0 (disabled) does not completely prevent the population of $HTTP_RAW_POST_DATA. In certain circumstances, data still gets populated into this variable.

Solution

To resolve this problem, set 'always_populate_raw_post_data' to '-1'. This will not only suppress the warning but also completely disable the population of $HTTP_RAW_POST_DATA.

Explanation

The 'always_populate_raw_post_data' setting has three possible values:

• -1: Disables population of $HTTP_RAW_POST_DATA under all circumstances.
• 0: Populates $HTTP_RAW_POST_DATA if the content-type is not registered or the request method is not POST.
• 1: Always populates $HTTP_RAW_POST_DATA.

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