Measuring Web Download Time (client Vs server side)

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  • duane
    #1

    Measuring Web Download Time (client Vs server side)

    Dear Experts:

    I am trying to measure a HTML page download time on the client side
    and store the value into a textfile located in the server.

    I have successfully measured the page download time (client-side)
    using JAVASCRIPT and write this value into a textfile in the server
    using PHP script. No problem so far.

    I call my PHP script using JAVASCRIPT (myPage.HTML):

    <BODY ONLOAD = if (first time entering this page) MyPHPScript >

    where

    MyPHPScript: PHP script that writes values on the server

    The problem is after the value is written to the textfile
    (server-side), I want the program to go back displaying the HTML page
    and finishes where it left off. However with the way I do it, I keep
    getting infinite loop. This is the reason:

    1. in myPage.HTML => 1st time it reaches BODY ONLOAD -> it'll call
    MyPHPscript
    2. in MyPHPScript => I redirect the page back to myPage.HTML
    3. in myPage.HTML => 2nd time it reaches BODY ONLOAD -> it'll call
    MyPHPscript(AGA IN!!)
    4. Back to step #2, then to step #3....(infinite loop)

    My goal is to prevent the client from knowing that I am calling
    MyPHPScript in between my HTML pages. I have about 50 HTML pages right
    now that are already running very well and would like to measure the
    download time for each page on the client side. I try to minimize my
    interference with the original flow of the existing system.

    Your help would be greatly appreciated.
    Tags: None
    • Janwillem Borleffs
      #2
      Re: Measuring Web Download Time (client Vs server side)


      "duane" <duawaktu@hotma il.com> schreef in bericht
      news:592d2609.0 309101047.33087 5cd@posting.goo gle.com...[color=blue]
      > Dear Experts:
      >
      > I am trying to measure a HTML page download time on the client side
      > and store the value into a textfile located in the server.
      >
      > I have successfully measured the page download time (client-side)
      > using JAVASCRIPT and write this value into a textfile in the server
      > using PHP script. No problem so far.
      >
      > I call my PHP script using JAVASCRIPT (myPage.HTML):
      >
      > <BODY ONLOAD = if (first time entering this page) MyPHPScript >
      >[/color]

      Try it the way the advertisement guys are doing it:

      <html>
      ....
      <script type="text/javascript">
      function isReady() {
      if ( document.cookie .indexOf('proce ssed') > -1 ) {
      // Avoid caching by appending a random number to the URL
      random = new Date().valueOf( );
      document.images['readygif'].src = 'thephpfile.php ?' +
      random;
      // Create a cookie to remember that this page has been
      visited
      document.cookie = "processed= 1";
      }
      </script>
      ....
      <body onload="isReady ()">
      ...
      <img src="dot.gif" name="readygif" height="1" width="1" />
      </body>
      </html>


      Then, thephpfile.php would contain something like this:

      <?
      // Mark whatever information you need

      header("Content-Type: image/gif");
      // include a basic gif image that you have prepared
      // or generate one using the GD functions
      ?>


      HTH,
      JW



        Comment

        • duane
          #3
          Re: Measuring Web Download Time (client Vs server side)

          Thank you JWB =)

          It works like a charm!

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