Nginx – How to enable PHP’s flush() with nginx+PHP-FPM

nginxPHPphp-fpm

I’m using nginx with PHP-FPM (APC is installed).

I need PHP’s flush() to work. Is this possible?

Things I’ve tried so far:

Disabling all output buffering in php.ini, as well as output compression.
Disabling gzip in nginx’s configuration.
Setting nginx’s fastcgi_* buffering settings and fastcgi_max_temp_file_size to zero.

I’m sure I must be missing something, since I’ve run across many posts here and elsewhere where people claimed they’ve got it working, but I’m having no luck, it would seem.

Best Answer

Sadly it's not possible with nginx. The nginx implementation of fastcgi requires a buffer to be in place, even if you set the buffering directive to 0 it will just cause it to buffer to disk instead of memory.

You'll have to figure out some alternative system such as a queue where you can poll for the status. (think ala gearman for instance)

Edit: This is since possible: http://nginx.org/en/docs/http/ngx_http_fastcgi_module.html#fastcgi_buffering

Correct way in new versions of nginx

Turn out my first answer to this question was correct at certain time, but it turned into another pitfall - to stay up to date please check Taxing rewrite pitfalls

I have been corrected by many SE users, so the credit goes to them, but more importantly, here is the correct code:

server {
       listen         80;
       server_name    my.domain.com;
       return         301 https://$server_name$request_uri;
}

server {
       listen         443 ssl;
       server_name    my.domain.com;
       # add Strict-Transport-Security to prevent man in the middle attacks
       add_header Strict-Transport-Security "max-age=31536000" always; 

       [....]
}

Nginx – How to restart php-fpm

Note: prepend sudo if not root

Using SysV Init scripts directly:

/etc/init.d/php-fpm restart    # typical
/etc/init.d/php5-fpm restart   # debian-style
/etc/init.d/php7.0-fpm restart # debian-style PHP 7

Using service wrapper script

service php-fpm restart    # typical
service php5-fpm restart   # debian-style
service php7.0-fpm restart # debian-style PHP 7

Using Upstart (e.g. ubuntu):

restart php7.0-fpm         # typical (ubuntu is debian-based) PHP 7
restart php5-fpm           # typical (ubuntu is debian-based)
restart php-fpm            # uncommon

Using systemd (newer servers):

systemctl restart php-fpm.service    # typical
systemctl restart php5-fpm.service   # uncommon
systemctl restart php7.0-fpm.service # uncommon PHP 7

Or whatever the equivalent is on your system.

Best Answer

Related Solutions

NGINX Redirect – How to Rewrite All HTTP Requests to HTTPS While Maintaining Sub-Domain

Correct way in new versions of nginx

Nginx – How to restart php-fpm

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