php read large text file log

Question

I have a text log file, about 600 MB.

I want to read it using php and display the data on a html page, but I only need the last 18 lines that were added each time I

Answer 1

you can stream it backwards with

$file = popen("tac $filename",'r');

while ($line = fgets($file)) {
  echo $line;
}