Partial merge of <https://github.com/php/doc-en/pull/266>. git-svn-id: https://svn.php.net/repository/phpdoc/ja/trunk@351861 c90b9560-bf6c-de11-be94-00142212c4b1
git-svn-id: https://svn.php.net/repository/phpdoc/ja/trunk@348761 c90b9560-bf6c-de11-be94-00142212c4b1