Re: [PHP] Read Last Lines of a Text File
* Thus wrote Scott Miller ([EMAIL PROTECTED]):
I have a text file (log file) that I want to be able to read the last 30
or
40 lines of. I've created the code below, but since this file is so
large
(currently 8 MB) it won't work. The code works on smaller files, but
not
this one. Can someone look at this below and tell me where I went
wrong?
...
$fcontents = file($filename);
This will make your script consume lots of memory, and is very
inefficient.
You'd be better of using the unix tail command:
$fp = popen(/usr/bin/tail -$limit $file, 'r');
if (! $fp ) {
echo 'unable to pipe command';
}
while (!feof($fp) ) {
$line = fgets($fp);
print $line;
}
Of course if you're simply going to output the results a simple:
system(/usr/bin/tail -$limit $file);
Would do the job nicely.
Curt
--
First, let me assure you that this is not one of those shady pyramid
schemes
you've been hearing about. No, sir. Our model is the trapezoid!
--
I've changed my script to the following:
?php
$file =/var/log/radius.log;
$fp = popen(/usr/bin/tail -$limit $file, 'r');
if (! $fp ) {
echo 'unable to pipe command';
}
while (!feof($fp) ) {
$line = fgets($fp);
print $line;
}
?
And now get the following errors:
Warning: Wrong parameter count for fgets() in /var/www/html/logs2.php on
line 10
I get this over and over and over (like it's producing the error once per
line in the log file).
Thanks,
Scott
--
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Re: [PHP] Read Last Lines of a Text File
Scott Miller wrote:
* Thus wrote Scott Miller ([EMAIL PROTECTED]):
I have a text file (log file) that I want to be able to read the last 30
or
40 lines of. I've created the code below, but since this file is so
large
(currently 8 MB) it won't work. The code works on smaller files, but
not
this one. Can someone look at this below and tell me where I went
wrong?
...
$fcontents = file($filename);
This will make your script consume lots of memory, and is very
inefficient.
You'd be better of using the unix tail command:
$fp = popen(/usr/bin/tail -$limit $file, 'r');
if (! $fp ) {
echo 'unable to pipe command';
}
while (!feof($fp) ) {
$line = fgets($fp);
print $line;
}
Of course if you're simply going to output the results a simple:
system(/usr/bin/tail -$limit $file);
Would do the job nicely.
Curt
--
First, let me assure you that this is not one of those shady pyramid
schemes
you've been hearing about. No, sir. Our model is the trapezoid!
--
I've changed my script to the following:
?php
$file =/var/log/radius.log;
$fp = popen(/usr/bin/tail -$limit $file, 'r');
if (! $fp ) {
echo 'unable to pipe command';
}
while (!feof($fp) ) {
$line = fgets($fp);
print $line;
}
?
And now get the following errors:
Warning: Wrong parameter count for fgets() in /var/www/html/logs2.php on
line 10
I get this over and over and over (like it's producing the error once per
line in the log file).
prior to PHP 4.2 you had to use a second parameter for fgets. This
parameter is the maximum length per line to read.
$line = fget($fp,4096);
will probably work.
HTH,
Oliver
--
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Re: [PHP] Read Last Lines of a Text File
- Original Message -
From: Oliver Hankeln [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, June 17, 2004 9:13 AM
Subject: Re: [PHP] Read Last Lines of a Text File
Scott Miller wrote:
* Thus wrote Scott Miller ([EMAIL PROTECTED]):
I have a text file (log file) that I want to be able to read the last
30
or
40 lines of. I've created the code below, but since this file is so
large
(currently 8 MB) it won't work. The code works on smaller files, but
not
this one. Can someone look at this below and tell me where I went
wrong?
...
$fcontents = file($filename);
This will make your script consume lots of memory, and is very
inefficient.
You'd be better of using the unix tail command:
$fp = popen(/usr/bin/tail -$limit $file, 'r');
if (! $fp ) {
echo 'unable to pipe command';
}
while (!feof($fp) ) {
$line = fgets($fp);
print $line;
}
Of course if you're simply going to output the results a simple:
system(/usr/bin/tail -$limit $file);
Would do the job nicely.
Curt
--
First, let me assure you that this is not one of those shady pyramid
schemes
you've been hearing about. No, sir. Our model is the trapezoid!
--
I've changed my script to the following:
?php
$file =/var/log/radius.log;
$fp = popen(/usr/bin/tail -$limit $file, 'r');
if (! $fp ) {
echo 'unable to pipe command';
}
while (!feof($fp) ) {
$line = fgets($fp);
print $line;
}
?
And now get the following errors:
Warning: Wrong parameter count for fgets() in /var/www/html/logs2.php on
line 10
I get this over and over and over (like it's producing the error once
per
line in the log file).
prior to PHP 4.2 you had to use a second parameter for fgets. This
parameter is the maximum length per line to read.
$line = fget($fp,4096);
will probably work.
HTH,
Oliver
Changed that line as shown above, and now get the following error:
Fatal error: Call to undefined function: fget() in /var/www/html/logs2.php
on line 11
Thanks,
Scott
--
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Re: [PHP] Read Last Lines of a Text File
Scott Miller wrote:
I've changed my script to the following:
?php
$file =/var/log/radius.log;
$fp = popen(/usr/bin/tail -$limit $file, 'r');
if (! $fp ) {
echo 'unable to pipe command';
}
while (!feof($fp) ) {
$line = fgets($fp);
print $line;
}
?
And now get the following errors:
Warning: Wrong parameter count for fgets() in /var/www/html/logs2.php on
line 10
I get this over and over and over (like it's producing the error once
per
line in the log file).
prior to PHP 4.2 you had to use a second parameter for fgets. This
parameter is the maximum length per line to read.
$line = fget($fp,4096);
will probably work.
HTH,
Oliver
Changed that line as shown above, and now get the following error:
Fatal error: Call to undefined function: fget() in /var/www/html/logs2.php
on line 11
Sorry. I mean fgets ...
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Re: [PHP] Read Last Lines of a Text File
- Original Message -
From: Oliver Hankeln [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, June 17, 2004 9:29 AM
Subject: Re: [PHP] Read Last Lines of a Text File
Scott Miller wrote:
I've changed my script to the following:
?php
$file =/var/log/radius.log;
$fp = popen(/usr/bin/tail -$limit $file, 'r');
if (! $fp ) {
echo 'unable to pipe command';
}
while (!feof($fp) ) {
$line = fgets($fp);
print $line;
}
?
And now get the following errors:
Warning: Wrong parameter count for fgets() in /var/www/html/logs2.php
on
line 10
I get this over and over and over (like it's producing the error once
per
line in the log file).
prior to PHP 4.2 you had to use a second parameter for fgets. This
parameter is the maximum length per line to read.
$line = fget($fp,4096);
will probably work.
HTH,
Oliver
Changed that line as shown above, and now get the following error:
Fatal error: Call to undefined function: fget() in
/var/www/html/logs2.php
on line 11
Sorry. I mean fgets ...
That worked perfectly - now I at least get this:
== standard input == == /var/log/radius.log == Thu Jun 17 09:21:01 2004:
Auth: Login OK: [flasht999] (from nas Cisco AS5300/S0) socket 0 (0 sec) Thu
Jun 17 09:22:22 2004: Auth: Login OK: [crbm] (from nas Cisco AS5300/S0)
socket 0 (0 sec) Thu Jun 17 09:22:23 2004: Auth: Login OK: [tleec] (from nas
Cisco AS5300/S0) socket 0 (0 sec) Thu Jun 17 09:23:19 2004: Auth: Login OK:
[ziegen] (from nas Cisco AS5300/S0) socket 0 (0 sec) Thu Jun 17 09:23:24
2004: Auth: Login OK: [ziegen] (from nas 10.1.4.21/S0) socket 0 (0 sec) Thu
Jun 17 09:23:42 2004: Auth: Login OK: [indiantrails] (from nas Cisco
AS5300/S0) socket 0 (0 sec) Thu Jun 17 09:24:38 2004: Auth: Login OK:
[kdglover] (from nas Cisco AS5300/S0) socket 0 (0 sec) Thu Jun 17 09:25:39
2004: Auth: Login OK: [altron] (from nas Cisco AS5300/S0) socket 0 (0 sec)
Thu Jun 17 09:26:06 2004: Auth: Login OK: [altron] (from nas 10.1.4.21/S0)
socket 0 (0 sec) Thu Jun 17 09:26:37 2004: Auth: Login OK: [nc3] (from nas
10.1.4.21/S0) socket 0 (0 sec)
Now, how can I force a \n; to make it look like this:
== standard input ==
== /var/log/radius.log ==
Thu Jun 17 09:21:01 2004: Auth: Login OK: [flasht999] (from nas Cisco
AS5300/S0) socket 0 (0 sec)
Thu Jun 17 09:22:22 2004: Auth: Login OK: [crbm] (from nas Cisco AS5300/S0)
socket 0 (0 sec)
Thu Jun 17 09:22:23 2004: Auth: Login OK: [tleec] (from nas Cisco AS5300/S0)
socket 0 (0 sec)
Thu Jun 17 09:23:19 2004: Auth: Login OK: [ziegen] (from nas Cisco
AS5300/S0) socket 0 (0 sec)
Thu Jun 17 09:23:24 2004: Auth: Login OK: [ziegen] (from nas xx.xx.xx.xx/S0)
socket 0 (0 sec)
Thu Jun 17 09:23:42 2004: Auth: Login OK: [indiantrails] (from nas Cisco
AS5300/S0) socket 0 (0 sec)
Thu Jun 17 09:24:38 2004: Auth: Login OK: [kdglover] (from nas Cisco
AS5300/S0) socket 0 (0 sec)
Thu Jun 17 09:25:39 2004: Auth: Login OK: [altron] (from nas Cisco
AS5300/S0) socket 0 (0 sec)
Thu Jun 17 09:26:06 2004: Auth: Login OK: [altron] (from nas xx.xx.xx.xx/S0)
socket 0 (0 sec)
Thu Jun 17 09:26:37 2004: Auth: Login OK: [nc3] (from nas xx.xx.xx.xx/S0)
socket 0 (0 sec)
Thanks,
Scott
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Re: [PHP] Read Last Lines of a Text File
Try adding number of bytes to read.
$line = fgets($fp, 4096);
* Thus wrote Scott Miller ([EMAIL PROTECTED]):
I have a text file (log file) that I want to be able to read the last
30
or
40 lines of. I've created the code below, but since this file is so
large
(currently 8 MB) it won't work. The code works on smaller files, but
not
this one. Can someone look at this below and tell me where I went
wrong?
...
$fcontents = file($filename);
This will make your script consume lots of memory, and is very
inefficient.
You'd be better of using the unix tail command:
$fp = popen(/usr/bin/tail -$limit $file, 'r');
if (! $fp ) {
echo 'unable to pipe command';
}
while (!feof($fp) ) {
$line = fgets($fp);
print $line;
}
Of course if you're simply going to output the results a simple:
system(/usr/bin/tail -$limit $file);
Would do the job nicely.
Curt
--
First, let me assure you that this is not one of those shady pyramid
schemes
you've been hearing about. No, sir. Our model is the trapezoid!
--
I've changed my script to the following:
?php
$file =/var/log/radius.log;
$fp = popen(/usr/bin/tail -$limit $file, 'r');
if (! $fp ) {
echo 'unable to pipe command';
}
while (!feof($fp) ) {
$line = fgets($fp);
print $line;
}
?
And now get the following errors:
Warning: Wrong parameter count for fgets() in /var/www/html/logs2.php on
line 10
I get this over and over and over (like it's producing the error once per
line in the log file).
Thanks,
Scott
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Read Last Lines of a Text File
Scott Miller wrote:
- Original Message -
From: Oliver Hankeln [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, June 17, 2004 9:29 AM
Subject: Re: [PHP] Read Last Lines of a Text File
Scott Miller wrote:
I've changed my script to the following:
?php
$file =/var/log/radius.log;
$fp = popen(/usr/bin/tail -$limit $file, 'r');
if (! $fp ) {
echo 'unable to pipe command';
}
while (!feof($fp) ) {
$line = fgets($fp);
print $line;
}
?
And now get the following errors:
Warning: Wrong parameter count for fgets() in /var/www/html/logs2.php
on
line 10
I get this over and over and over (like it's producing the error once
per
line in the log file).
prior to PHP 4.2 you had to use a second parameter for fgets. This
parameter is the maximum length per line to read.
$line = fget($fp,4096);
will probably work.
HTH,
Oliver
Changed that line as shown above, and now get the following error:
Fatal error: Call to undefined function: fget() in
/var/www/html/logs2.php
on line 11
Sorry. I mean fgets ...
That worked perfectly - now I at least get this:
[snip]
Now, how can I force a \n; to make it look like this:
Simply add one. print $line.\n; should work. Or if your output is html
print $line.br;
Oliver
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Re: [PHP] Read Last Lines of a Text File
- Original Message -
From: Oliver Hankeln [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, June 17, 2004 10:01 AM
Subject: Re: [PHP] Read Last Lines of a Text File
Scott Miller wrote:
- Original Message -
From: Oliver Hankeln [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, June 17, 2004 9:29 AM
Subject: Re: [PHP] Read Last Lines of a Text File
Scott Miller wrote:
I've changed my script to the following:
?php
$file =/var/log/radius.log;
$fp = popen(/usr/bin/tail -$limit $file, 'r');
if (! $fp ) {
echo 'unable to pipe command';
}
while (!feof($fp) ) {
$line = fgets($fp);
print $line;
}
?
And now get the following errors:
Warning: Wrong parameter count for fgets() in /var/www/html/logs2.php
on
line 10
I get this over and over and over (like it's producing the error once
per
line in the log file).
prior to PHP 4.2 you had to use a second parameter for fgets. This
parameter is the maximum length per line to read.
$line = fget($fp,4096);
will probably work.
HTH,
Oliver
Changed that line as shown above, and now get the following error:
Fatal error: Call to undefined function: fget() in
/var/www/html/logs2.php
on line 11
Sorry. I mean fgets ...
That worked perfectly - now I at least get this:
[snip]
Now, how can I force a \n; to make it look like this:
Simply add one. print $line.\n; should work. Or if your output is html
print $line.br;
Oliver
The following works perfectly:
?php
$file =/var/log/radius.log;
$fp = popen(/usr/bin/tail -$limit $file, 'r');
if (! $fp ) {
echo 'unable to pipe command';
}
while (!feof($fp) ) {
$line = fgets($fp, 4096);
print $line.br;
}
?
I've tried bumping up the 4096 to a higher number because it currently only
shows me 10 lines - I'd like to see about 30. No matter what I change the
number to, it still only shows 10 lines. What do I need to do to get more
that the 10 lines?
Thanks,
Scott
--
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Re: [PHP] Read Last Lines of a Text File
[snip]
?php
$file =/var/log/radius.log;
$fp = popen(/usr/bin/tail -$limit $file, 'r');
if (! $fp ) {
echo 'unable to pipe command';
}
while (!feof($fp) ) {
$line = fgets($fp, 4096);
print $line.br;
}
?
I've tried bumping up the 4096 to a higher number because it currently
only
shows me 10 lines - I'd like to see about 30. No matter what I change
the
number to, it still only shows 10 lines. What do I need to do to get
more
that the 10 lines?
[/snip]
I am jumping in late so I might have missed it. What is $limit set
too? is it set to 30?
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Re: [PHP] Read Last Lines of a Text File
[snip]
?php
$file =/var/log/radius.log;
$fp = popen(/usr/bin/tail -$limit $file, 'r');
if (! $fp ) {
echo 'unable to pipe command';
}
while (!feof($fp) ) {
$line = fgets($fp, 4096);
print $line.br;
}
?
I've tried bumping up the 4096 to a higher number because it currently
only
shows me 10 lines - I'd like to see about 30. No matter what I change
the
number to, it still only shows 10 lines. What do I need to do to get
more
that the 10 lines?
[/snip]
I am jumping in late so I might have missed it. What is $limit set
too? is it set to 30?
I actually don't have limit set anywhere - I added:
$limit=30;
directly under $file = ... and got exactly what I need.
Thanks for all the help!
Scott
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Re: [PHP] Read Last Lines of a Text File
[snip] I've created the code below, but since this file is so large (currently 8 MB) it won't work. [/snip] I would guess you are running into your php memory_limit. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Read Last Lines of a Text File
[EMAIL PROTECTED] (Scott Miller) wrote in
news:[EMAIL PROTECTED]:
I have a text file (log file) that I want to be able to read the last
30 or 40 lines of. I've created the code below, but since this file
is so large (currently 8 MB) it won't work. The code works on smaller
files, but not this one. Can someone look at this below and tell me
where I went wrong?
?php
$filename =/var/log/radius.log;
$myFile = fopen($filename, r); //open the file for reading, file
pointer will be at the beginning of the file
if(! $myFile){// Make sure the file was opened
successfully
print (File could not be opened.);
exit;
}
$fcontents = file($filename);
$limit = 30;
for ($i = 0; $i $limit; $i++){ // while $i is less than 30
$line = $fcontents[$i]; // assign value of array element to a
variable
if($line != ){ // if the line from the file is not blank
print it
echo $line \n;
}
}
fclose($myFile);
?
Thanks,
Scott Miller
Your problem is likely with the following line, which reads the *entire*
file into an array:
$fcontents = file($filename);
You're also opening and closing a file handle, but never using it. Use
fread after fopen instead of the file function. You'll have to decide on
a byte limit instead of a line limit, though.
http://php.net/manual/en/function.fread.php
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Re: [PHP] Read Last Lines of a Text File
Or maybe execution time limit. [snip] I've created the code below, but since this file is so large (currently 8 MB) it won't work. [/snip] I would guess you are running into your php memory_limit. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php _ Is your PC infected? Get a FREE online computer virus scan from McAfee® Security. http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] Read Last Lines of a Text File
* Thus wrote Scott Miller ([EMAIL PROTECTED]):
I have a text file (log file) that I want to be able to read the last 30 or
40 lines of. I've created the code below, but since this file is so large
(currently 8 MB) it won't work. The code works on smaller files, but not
this one. Can someone look at this below and tell me where I went wrong?
...
$fcontents = file($filename);
This will make your script consume lots of memory, and is very
inefficient.
You'd be better of using the unix tail command:
$fp = popen(/usr/bin/tail -$limit $file, 'r');
if (! $fp ) {
echo 'unable to pipe command';
}
while (!feof($fp) ) {
$line = fgets($fp);
print $line;
}
Of course if you're simply going to output the results a simple:
system(/usr/bin/tail -$limit $file);
Would do the job nicely.
Curt
--
First, let me assure you that this is not one of those shady pyramid schemes
you've been hearing about. No, sir. Our model is the trapezoid!
--
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