PHP recursive function

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  • Ciri
    New Member
    • Oct 2007
    • 18
    #1

    PHP recursive function

    Hi all, I need a PHP script that checks the creation date of a file each 5 seconds, if creation date is changed it reload the page via javascript
    I' ve tried with:

    function verificaData($d ataCreazione)
    {
    flush();
    sleep(5);
    flush();
    $datacreTemp= filectime('SiSe Fi/SiSeFi.png');
    if ($dataCreazione ==$datacreTemp)
    {
    verificaData($d atacreTemp);
    }
    else
    {
    echo'<script>wi ndow.location.r eload();</script>' ;
    }
    }
    I just call the function after the <body> tag.
    Why it doesn't work?
    What wrong with this?

    Thanks.
    Tags: None
    • MarkoKlacar
      Recognized Expert Contributor
      • Aug 2007
      • 296
      #2
      Hi,

      I fail to see why this funtion has to be recursive, if the page that's calling this function is to be open constantly you could probably just to with a loop of some sort.

      I don't know the context or the use of you php file, but perhaps you could look at the filemtime function.

      Hope this helps..

        Comment

        • Ciri
          New Member
          • Oct 2007
          • 18
          #3
          Originally posted by MarkoKlacar
          Hi,

          I fail to see why this funtion has to be recursive, if the page that's calling this function is to be open constantly you could probably just to with a loop of some sort.

          I don't know the context or the use of you php file, but perhaps you could look at the filemtime function.

          Hope this helps..

          Ok, thanks. I've tried your way:
          <?
          $creationTime=f ilemtime('myPic ture.png')
          while(true)
          {
          flush();
          sleep(5);
          if ($creationTime! =filemtime('myP icture.png')
          {
          echo'<script language=javasc ript> window.location .reload();</script>';
          }

          }
          ?>

          It seems to work only for one user per time.
          If I open only one instance of the browser it's perfect but if I open a second window on the same page both apps stops working and freeze the browser!
          Any suggestion?

          Thanks.

            Comment

            • MarkoKlacar
              Recognized Expert Contributor
              • Aug 2007
              • 296
              #4
              Hi,

              What happens if you remove flush()?

                Comment

                • Ciri
                  New Member
                  • Oct 2007
                  • 18
                  #5
                  I've tried removing the flush(): the page never loads.
                  This is the complete code of the page:

                  <html>
                  <head>
                  </head>
                  <body>
                  <img src="SiSeFi/SiSeFi.png" style="backgrou nd-image:url(SiSeF i/SiSeFi_bckgrd.j peg)" alt=""/>

                  <?
                  $dataCreazione= filectime('SiSe Fi/SiSeFi.png');
                  while ($dataCreazione ==filectime('Si SeFi/SiSeFi.png'))
                  {
                  sleep(5);
                  }

                  ?>

                  </body>
                  </html>

                  Could you help me please understaing why it doesn't work?

                  Thank you all guys.

                    Comment

                    • MarkoKlacar
                      Recognized Expert Contributor
                      • Aug 2007
                      • 296
                      #6
                      Hi,

                      Don't know if this solves you problem but you while statement looks different now(the names are wrong i know..)
                      [PHP]if ($creationTime= =filemtime('myP icture.png')[/PHP]
                      you use to have
                      [PHP]if ($creationTime! =filemtime('myP icture.png')[/PHP]

                      perhaps you need to look at that...

                      Get back to us if you need more help, maybe I can provide you with an alternative solution if it'a an option for you...

                      Good Luck..

                        Comment

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