回声语句没有正确刷新？

Question

I've been trying to debug this code for hours now, but haven't been making any headway. My print statements are simply not working. Another question suggested I flush(), but it's not working.

echo 'this never prints';
flush();
flush();
flush();

Any help would be appreciated.

Answer 1

If you are inside an outbut buffer, which you can check with ob_get_level()>0, you can flush contents with ob_flush(). If you want to break out of all outbut buffers, this is a quick oneliner to end them all:

while(ob_get_level()>0) ob_end_flush();

Possibly use ob_end_clean() instead of ob_end_flush() if you want to discard the buffer(s).