New answers tagged server
If you are using short open tags, check that you have this turned on in your php.ini on your server. However, this is considered bad practice, and recommended to only those who like to target practice with shooting themselves in the foot. I was getting the same error as you, but when I checked my functions.php, the functions where there, in broad daylight, ...
More information about what is happening can be found here: http://arstechnica.com/security/2016/02/mysterious-spike-in-wordpress-hacks-silently-delivers-ransomware-to-visitors/?comments=1 https://www.wordfence.com/blog/2016/02/wordpress-security-attack-platform/
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