facebook/facebook-php-sdk — pull request #75 by uuf6429 (2013-04-28 01:19:49+00:00)
Title: Update base_facebook.php

In PHP string literals, the backslash (\) is used as an escape character. To write an actual backslash, a double backslash should be used (\\). This does not fix any problem since PHP defaults to a normal backslash when the escape sequence is illegal (eg: \/).