Sort array from .dat file

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  • Dan R.
    #1

    Sort array from .dat file

    I'm using the following to open and print values from a .dat file but
    I can't figure out how to sort the results. I think I need to use
    either the array_multisort () or krsort() functions. If so, how would I
    do that?

    <html>
    <body>
    <pre>
    <?php

    $fp = fopen("datfile. dat", r);
    $count = 0;
    while(!feof($fp ))
    {
    $register = fgets($fp, 4);
    $sales = fgets($fp, 5);

    $register_array[$count] = $register;
    $sales_array[$count] = $sales;

    print "Register: $register_array[$count]<br>";
    print "Sales: $sales_array[$count]<br>";
    $count = $count + 1;
    }

    ?>
    </pre>
    </body>
    </html>

    --
    Thanks,
    Dan

    Tags: None
    • Janwillem Borleffs
      #2
      Re: Sort array from .dat file

      Dan R. wrote:
      I'm using the following to open and print values from a .dat file but
      I can't figure out how to sort the results. I think I need to use
      either the array_multisort () or krsort() functions. If so, how would I
      do that?
      >
      No matter which function you use, you will have to create the array before
      you can apply it. Immediately, performance will be an issue when files get
      bigger.

      The best thing in this case (besides using a database) is to sort the data
      while writing to the file. Performance will then be less of an issue, since
      you could make the process asynchrone. When the file is already sorted, all
      you have to do is displaying its contents.


      JW


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