$HTTP_RAW_POST_DATA is deprecated and php://input stream Laravel 5.2

Hi there I just got this error today using php5.6 and Laravel 5.2

Error:

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. in Unknown on line 0

The Part I don't understand is "use the php://input stream instead. in Unknown on line 0" I am still getting this error and the second part I don't understand with the php://input stream

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