Re: Opening large text files on Windows

Hi Richard:

On Fri, May 24, 2002 at 02:42:59PM +0100, Meredith-Wilks, Richard wrote:


[NOTE:  Read throuhg the whole thing before commenting... --Dan]

>     set_time_limit(200);
>     $datafile = fopen ("text.txt", "r");
>     while (!feof ($datafile)) {
>       $array = fgets($datafile, 1000000);

fgets() produces a string, but you're saying it's an array.
If you want to fill an array, do this: 
       $array[] = fgets($datafile, 1000000);


>       if (trim($array)) {

Trim() on an array???  NAY!


>         $count = count(explode($Seper, $array));

Your code doesn't show that $Seper has been set to anything.

You run count on the array itslef, not the explode of array.  OH!  
Are you trying to take a line that's delimited by a special character 
and count the number of "fields" in the line?  In that case, back up.
Use fgetcsv (http://www.php.net/manual/en/function.fgetcsv.php):

       $array = fgets($datafile, 1000000, $Seper);
       $count = count($array);

Of course, you realize, the way this is set up makes the "echo $count"  
at the end only show the $count from the last line.  To get the total 
from the whole file, do this

       $count += count($array);


>       } // end if $array
>     } // end while
>     fclose ($datafile);
>     echo $count;

Also, you mentioned that the file is large.  You may need to bump up the 
memory_limit.

Now, if my later observation is correct about what you're trying to do,
perhaps this is a simpler way to do what you're trying to do:

   $array = file('./text.txt');
   $content = implode('', $array);
   echo substr_count($content, $Seper);

Yeow!

--Dan

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