PHP backtick gotcha


Posted by Andrew McCombe on Tue Mar 12, 2013

This PHP Snippet caught me out today:

Notice the backticks around the array key? These automatically try executing the key as a shell command, in this case, trying to change the password of the www-data user. A simple typo, but nevertheless, a gotcha.

This is documented at http://php.net/manual/en/language.operators.execution.php