Add check to see if PHP > 5.6 and always_populate_raw_post_data = -1

[RMcLeod79]

Fix for issue #1057

$HTTP_RAW_POST_DATA has been deprecated in PHP 5.6 the ini setting is commented out by default however this causes PHP to throw an E_DEPRECATED notice whenever it receives post data that isn't application/x-www-form-urlencoded (e.g. application\json).

This is causing the database check to fail during Web Setup as Angular JS posts application\json by default. This fix checks the users PHP version and the value of always_populate_raw_post_data and warns if they are using PHP >= 5.6.0 and always_populate_raw_post_data isn't explicitly set to -1

[anupdugar]

@RMcLeod79 Thank you for your contribution! We will review the changes and process it internally through ticket MAGETWO-33491.

[sshrewz]

We are currently processing this pull request and this should be available by end of this week. Thank you for your contribution!

[pronto2000]

Any news about this issue? I mean I installed latest version from Git and database connection test ajax request returns following:

<br /> <b>Deprecated</b>: 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 <b>Unknown</b> on line <b>0</b><br /> <br /> <b>Warning</b>: Cannot modify header information - headers already sent in <b>Unknown</b> on line <b>0</b><br /> {success: true}

[ghost]

Added this to the install guide: http://devdocs.magento.com/guides/v2.0/install-gde/prereq/php-ubuntu.html#instgde-prereq-timezone

[pronto2000]

I think this option will be removed from upcoming PHP 7?

[ghost]

Correct but I expect Magento will continue to support PHP 5.6 and until PHP 7 is released, it's not mentioned in the install guide at all.