Reading Log File - Separate to 2 files.

Mad_T

Hi
I have a log file that has been created using tail and specifying two files.

So the log file has output from both files. It looks like this :

==> /var/log/device.log <==
01/01/2012 DATA DATA DATA DATA DATA DATA
01/01/2012 DATA DATA DATA DATA DATA DATA
01/01/2012 DATA DATA DATA DATA DATA DATA
01/01/2012 DATA DATA DATA DATA DATA DATA
01/01/2012 DATA DATA DATA DATA DATA DATA
01/01/2012 DATA DATA DATA DATA DATA DATA

==> /var/log/system.log <==
01/01/2012 FOO FOO FOO FOO FOO FOO FOO
01/01/2012 FOO FOO FOO FOO FOO FOO FOO
01/01/2012 FOO FOO FOO FOO FOO FOO FOO
01/01/2012 FOO FOO FOO FOO FOO FOO FOO

==> /var/log/device.log <==
01/01/2012 BAR  BAR  BAR  BAR  BAR  BAR  BAR  

01/01/2012 BAR  BAR  BAR  BAR  BAR  BAR  BAR  

01/01/2012 BAR  BAR  BAR  BAR  BAR  BAR  BAR  

01/01/2012 BAR  BAR  BAR  BAR  BAR  BAR  BAR  

==> /var/log/system.log <==
01/01/2012 TEST  TEST  TEST  TEST  TEST  TEST 
01/01/2012 TEST  TEST  TEST  TEST  TEST  TEST 
01/01/2012 TEST  TEST  TEST  TEST  TEST  TEST 
01/01/2012 TEST  TEST  TEST  TEST  TEST  TEST

this keeps repeating with device.log and system.log data interspersed with each other.

What I'd like to do is read that file and create 2 new files.

device.log - containing all the device data
&
system.log - containing all the system data.

I can read the file line by line, but how do I get this to work ?

Thanks 🙂

Mad_T

Ok, I've got this working.. sort of:

$lines = file('all.log'); $n=0;$att=array();
foreach ($lines as $line_num => $line) 
{ 
	if(strstr($line,'==>')) {
		$fw = (strstr($line,'device')) ? "device.log" : "system.log";
		continue;
		}
		$f=fopen ($fw,"a");
		fwrite ($f,$line."\r\n");
}
fclose($f);

This works and outputs the data to the correct files, but If I run it again it adds to the files, not deleting and starting again.
I could check if they exist at the beginning, but is there a neater way ?

Thanks

NogDog

I'd probably just write the data to a pair of arrays (one for device and one for system), then implode() and write each to its respective file via file_put_contents(). If there could be enough data that this becomes too memory intensive, then just open up two different file handles with 'w' instead of 'a', and use your if condition to choose which handle will be used for each write.