我修改了php_ini并仍然得到PHP警告POST Content-Length超出限制

Question

I have changed php.ini, post_max_size = 20M;

php -i | grep 'post_max_file' ,post_max_size => 20M => 20M

After all , I still get nginx error log:

FastCGI sent in stderr: "PHP message: PHP Warning: POST Content-Length of 9522297 bytes exceeds the limit of 8388608 bytes in Unknown on line 0" while reading response header from upstream, client: 192.168.2.106, server: www.hinabian.com, request: "POST /image/save?editorid=id_content HTTP/1.1", upstream: "fastcgi://unix:/var/run/php5-fpm.sock:"