Get the last 50 lines from text file using php

Question

I have a text file such as a log file, and I want to get the last 50 lines from that.

How can I do it, in PHP?

score 4 · Answer 1 · answered May 01 '11 at 11:33

4

I guess you could also be using "tail" if you are on linux.

$handle = popen("tail -50l YOUR_FILE_HERE 2>&1", 'r');
while(!feof($handle)) {
    $buffer = fgets($handle);
    echo "$buffer<br/>\n";
    ob_flush();
    flush();
}
pclose($handle);

answered May 01 '11 at 11:33

dwarfy

3,076
18
22

BSD has them too. And I'm not sure, but I think Macs have some basic Unix utilities like those too (not like someone would run an OS X server on production, but...). – Camilo Martin Mar 17 '13 at 22:42

score 2 · Answer 2 · answered May 01 '11 at 11:27

2

There are some sollutions in comments for function fseek.

answered May 01 '11 at 11:27

Koc

2,375
2
22
26

i checked could not get any solutions – Roshan Wijesena May 01 '11 at 11:28

score 2 · Answer 3 · answered May 01 '11 at 15:27

2

<?
$data = file('yourfile.txt');
$lines = implode("\r\n",array_slice($data,count($data)-51,50));
?>

As simple as this

answered May 01 '11 at 15:27

Geekbay

21
1

score 1 · Answer 4 · answered May 01 '11 at 11:29

I think you can use fopen to get the handle, then use filesize to get the size and fseek to go to filesize-50. Then it's just fread of 50 characters to get the last 50. I imagine this ha been done before if you look at the manual under fseek.

Here is the solution in the fseek manual entry. Just change the -1 on the fseek line to -50.

Get the last 50 lines from text file using php

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