PHP升级

刚刚把PHP升级到最新的5.6.6，本想升级到PHP7，但是由于没get到源码作罢。
升级完毕后部分文件显示access denied。
在stackoverflow上发现了几个解决方案，

In your php-fpm www.conf set security.limit_extensions to .php or
.php5 or whatever suits your environment. For some users, completely
removing all values or setting it to FALSE was the only way to get it
working.

In your nginx config file set fastcgi_pass to your socket address
(e.g. unix:/var/run/php-fpm/php-fpm.sock;) instead of your server
address and port.

Check your SCRIPT_FILENAME fastcgi param and set it according to the
location of your files.

In your nginx config file include fastcgi_split_path_info
^(.+.php)(/.+)$; in the location block where all the other fastcgi
params are defined.

都无效，最后发现是php.ini里cgi.fix_pathinfo的值为0，造成pathinfo的部分文件没法用，修改为1重启php后解决问题。