Make sure that we mention that "NEAREST" is actually random.


git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@332831 c90b9560-bf6c-de11-be94-00142212c4b1
Read the code to document what we really do.


git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@332832 c90b9560-bf6c-de11-be94-00142212c4b1