[PHP] Getting line count of a text file

[Frank J. Schima]

Hi all,


In PHP 5, I'm counting the number of lines in a text file using the  
following code:

  $myfile = file ( '/path/to/myfile.txt');
  $count = count ($myfile);

However, sometimes it fails with the following error:
	PHP Fatal error:  Allowed memory size of  bytes exhausted (tried  
to allocate 35 bytes) in /path/to/myprogram.php on line 16


Line 16 is the first line above.

I'm sure there is a better - more memory efficient - way to do this.  
Any suggestions?



Thanks!
Frank Schima
Foraker Design
http://www.foraker.com

Re: [PHP] Getting line count of a text file

[Frank J. Schima]

On Sep 12, 2007, at 1:46 PM, Nathan Nobbe wrote:


On 9/12/07, Wolf [EMAIL PROTECTED] wrote:
$command=  escapeshellcmd(cat {$file} | wc -l);
// Run command and capture results
$count  =  exec($command);


that would work on *nix, but not windows.


Since I am developing and deploying on *nix, shell commands are fine  
with me.



 Frank J. Schima [EMAIL PROTECTED] wrote:
 Hi all,


 In PHP 5, I'm counting the number of lines in a text file using the
 following code:
 $myfile = file ( '/path/to/myfile.txt');
 $count = count ($myfile);

 However, sometimes it fails with the following error:
   PHP Fatal error:  Allowed memory size of  bytes  
exhausted (tried

 to allocate 35 bytes) in /path/to/myprogram.php on line 16

 Line 16 is the first line above.

 I'm sure there is a better - more memory efficient - way to do this.
 Any suggestions?


 Thanks!
 Frank Schima
 Foraker Design
 http://www.foraker.com



if you want a cross-platform solution (not that i use windows :))
or you dont want to use exec() or related functions look to the stream
functions.  they support buffered reading, so theorectically a  
script could
read portions of a file and count lines as it read through the  
portions.


Sounds a little painful. I'll look into it though.



-nathan



Thanks!

Frank Schima
Foraker Design
http://www.foraker.com
303-449-0202

Re: [PHP] Getting line count of a text file

[Frank J. Schima]

Hi Gang,


On Sep 12, 2007, at 1:58 PM, bruce wrote:


if you're going to do the system approach, go ahead and use awk/cut...

wc -l foo.txt | awk -F' ' '{print $1}'

should work assuming you're on linux.


I have solved the problem with this approach. Thanks for all the  
suggestions.


FYI, it was a (very) minor pain to make that into a string. I ended  
up using this:


	  $count = system(wc -l /path/to/myfile.txt | awk -F' ' '{print  .  
'$' . 1}');


I didn't need to escape anything because the file was hardcoded - no  
user input.



Cheers,
Frank Schima
Foraker Design
http://www.foraker.com
303-449-0202

Re: [PHP] PHP 5.2.0 Session Handling Bug? Can someone test this please?

[Frank J. Schima]

The ID never changed for me.

PHP 5.2.0
Apache 1.3.33
Mac OS X 10.4.8


On Nov 16, 2006, at 9:28 AM, Colin Guthrie wrote:

I've noticed a bug with PHP 5.2.0 when dealing with sessions and  
posting

quite large forms.

I've attached a file that highlights the bug.

Can people test this please and if it is confirmed i'll post upsteam.
Just want to rule out my distro's packaging being at fault

I am using the suochsim, soouishm, soushim ach the security patch
thing, so that may be what is at fault here.

Anyway, I don't think the data itself is to blame but I didn't fiddle
too much with it as I didn't see the point.

I've tested this on PHP 5.1.6 and it is not affected.

Thanks.

Col.

bug.php


Frank Schima
Foraker Design
http://www.foraker.com
303-449-0202