PHP Flush Not Working

php flush not working

You're using ob_flush without ob_start, so there is nothing to flush for it.

It also depends on the webserver and proxy and its settings.

You should disable buffering for Nginx (add proxy_buffering off; to the config file and restart Nginx)

Also, check if your php.ini contains output_buffering = Off and zlib.output_compression = Off.

ob_flush () does not work on my server

As you have mentioned that you don't see any value for output_buffering in your comment, I assume it's turned off in your server.

If you are using your own server, then look for the Configuration File (php.ini) Path option in your phpinfo page (which I asked you to create in comments).

Then open that file, find the ;output_buffering = Off line, and change it to:

output_buffering = 4096

You might need to restart your apache server (or your web server if it's different).

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If you are on a shared hosting, most hosting providers allow you add your own configurations by adding a php.ini file to your public_html folder.

Create a file named as php.ini and include output_buffering = 4096 in it, then upload it to your public_html folder. It should work.

Hope it helps :) Feel free to ask anything if you have any doubts.

PHP flush don't work

This works, but only in a default apache environment:

<?php
ini_set('output_buffering', 0);
ini_set('zlib.output_compression', 0);
if( !ob_get_level() ){ ob_start(); }
else { ob_end_clean(); ob_start(); }
for ($i = 0; $i < 10; $i++) {
  //For Nginx we have to reach minimum  buffer size, 
  //so if it is not enough increment output
  echo str_pad( $i . '<br>', 1024 + 10, ' ', STR_PAD_RIGHT ); 
  flush();
  ob_flush();
  sleep(1);
}

Nginx needs more configurations:

usually in /etc/nginx/nginx.conf

gzip off;
proxy_buffering off;
fastcgi_buffer_size 1k;       #set buffer to 1k
fastcgi_max_temp_file_size 0;
fastcgi_buffers 128 1k;       #set max buffer size to 1k + 128*1k

PHP flush() function not working

My problem was php handler, i was using suphp, now i changed it to fastcgi and problem solved.

ob_implicit_flush(), flush(), ob_flush() - not working on remote server

I didn't take into account nginx, which has it's own output buffer.

I simply added 'header("X-Accel-Buffering: no");' to the top of the php script and it all works fine now.

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