Yes! That's it! I added that srand function, and it works great. Thanks!
..Rene > -----Original Message----- > From: Tamas Arpad [mailto:[EMAIL PROTECTED]] > Sent: Wednesday, October 31, 2001 10:58 AM > To: René Fournier > Cc: Php-General > Subject: Re: [PHP] Re: Weird caching problem with PHP4/Apache -- THE > SAGA CONTINUES > > > On Wednesday 31 October 2001 18:18, René Fournier wrote: > > Here's what I've got, starting at the top... > > > > ========================================== > > <?php > > header ('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); // Date in > > the past header ('Last-Modified: ' . gmdate('D, d M Y H:i:s') . ' > > GMT'); // always modified header ('Cache-Control: no-cache, > > must-revalidate'); // HTTP/1.1 header ('Pragma: no-cache'); > > // HTTP/1.0 ?><html> > > <head> > > <title>Title</title> > > <META HTTP-EQUIV="Expires" CONTENT="0"> > > <meta http-equiv="Content-Type" content="text/html; > > charset=iso-8859-1"> > > > > [SNIP] > > > > <?php > > function randbg() { > > $num_of_bgs = 5; > > $the_one = rand(1,$num_of_bgs); > > echo "bg".$the_one.".jpg"; > > } > > ?> > > > > [SNIP] > > > > <td valign=top align=left background=../common/images/bg/<?php > > randbg(); ?>> ========================================== > Ah, so you have bg1.jpg, bg2.jpg and so on till 5. > And want to show one of them selected by a random value? > > So when you click on browser's refresh button, what happens? > You always get the same page as before with for example bg1.jpg? > > Do you seed the random number generator (srand()) before you use > rand() function? > > Arpi > > > Here's why I think it's PHP4: If I look at these pages on my local > > machine (WinME, Apache 1.3.20, PHP4.06 module, MySQL 3.23.14 (not > > that it matters, right?)), the randbg() function works as it > > should--I get a random background image everytime. But if I look > > at these EXACT SAME pages on Fatcow (Linux/Apache, I believe, > > PHP4...), the randbg() function executes the first time, then > > [seemingly] fails to execute again--it never generates a different, > > random bakground. (Or maybe I'm looking at one hell of a > > coincidence :-) > > > > So my question is, who is caching what, where? > > > > ...Rene > > > > > -----Original Message----- > > > From: Tamas Arpad [mailto:[EMAIL PROTECTED]] > > > Sent: Wednesday, October 31, 2001 7:24 AM > > > To: René Fournier; Hugh Danaher > > > Cc: Php-General > > > Subject: Re: [PHP] Re: Weird caching problem with PHP4/Apache > > > > > > On Wednesday 31 October 2001 14:48, René Fournier wrote: > > > > Nope, unfortunately, nothing. It's a really weird problem. > > > > It's like the PHP function I wrote for generating the random > > > > image will only work the first time. > > > > > > I think it is not php that caches it. As I undertsand you wrote a > > > script that generates an image, and give it back to the browser > > > in an <img src=...> html tag. Am I right? > > > I hope I am, so I continue :)) > > > Images can be cached in many places (proxies, browser), but > > > definietly not in php. Your script that generates in the image > > > and should be called every time by the <img> html tag, won't ever > > > called again if the previous image were stored somewhere. You > > > should send "pragma no-cache" and other http headers (many posts > > > were on this "cache headers" topic) from the script that > > > generates and gives back the image. > > > Or another sollution is that you can call your script with a > > > random number or better with the current date and time, so you > > > images's name won't be the same, and caches can't give back the > > > old image. for example: > > > <?php echo"<img src=\"generatebackground.php?x=".date("YmdHis"). > > > "\">";?> > > > > > > Arpi > > > > > > -- > > > PHP General Mailing List (http://www.php.net/) > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > > For additional commands, e-mail: [EMAIL PROTECTED] > > > To contact the list administrators, e-mail: > > > [EMAIL PROTECTED] > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > To contact the list administrators, e-mail: [EMAIL PROTECTED] -- PHP General Mailing List (http://www.php.net/) To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] To contact the list administrators, e-mail: [EMAIL PROTECTED]
