After applying the patch from #2602478: Compatibility with Facebook PHP SDK v5 and Graph API 2.5, and downloading the latest Facebook SDK for PHP, you will undoubtedly run into the error that the function hash_equals() is not defined. This security-related function is only available starting in PHP 5.6; we need to back-port it into FB Autopost, probably using the implementation from Drupal 8, to enable users to user more modern versions of the Facebook SDK.

As a workaround, according to #2699113: New node does not post on fb, version 5.1.2 of the Facebook SDK for PHP is the last version that did not have this requirement.

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#2 fb_autopost-hash_equals_compat-2763517-1-7.x.patch1.85 KBGuyPaddock
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GuyPaddock created an issue. See original summary.

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GuyPaddock CreditAttribution: GuyPaddock at RedBottle Design, LLC for Inveniem commented
Status: Active » Needs review
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fb_autopost-hash_equals_compat-2763517-1-7.x.patch1.85 KB

The attached patch back-ports the function from Drupal 8, into a new "fb_autopost.compat.inc" include file.