Code help

[ZeptOr]

Well, because I was not able to solve my problem on how to get a gradient transparent background working in IE, I decided to do something different. I want to have the background image show for Firefox users, but for IE users I want it to show nothing. How do I got about doing this?

 

[Chris Z]

do a little something like this

<?php
function agent($browser) {
$useragent = $_SERVER['HTTP_USER_AGENT'];
return strstr($useragent, $browser);
}
if(agent('Firefox') != FALSE) 
  {
    $img = @imagecreatefromjpeg("http://www.mysite.com/my_image.jpg");
    ImageDestroy($img);
   }

else 
  {
    echo "Sorry, it appears you do not have Firefox, which means you cannot see the image.";  
  }

 

[ZeptOr]

This is interesting. I am not much of a coder, I know HTML but thats it.

Does this basically say if the viewer isn't using Firefox, then destroy the image that I only want displayed in Firefox?

 

[Micro]

Except dont put the echo in there, its not needed and wont be seen if its just a img src="phpscript"

 

[ZeptOr]

okay what about this

instead of getting rid of the image if the user is using IE, how would you code something so that it replaces a background image with another one if the user is using IE

 

[aking47]

 <?php
function agent($browser) {
$useragent = $_SERVER['HTTP_USER_AGENT'];
return strstr($useragent, $browser);
}
if(agent('Firefox') != FALSE) 
  {
    $img = @imagecreatefromjpeg("http://www.mysite.com/my_image.jpg");
    ImageDestroy($img);
   }

else 
  {
    // This bit here:
    $img = @imagecreatefromjpeg("http://www.mysite.com/internetexplorer_image.jpg");
    ImageDestroy($img);
  }

 

[ZeptOr]

what if the images are png, does that matter?

 

[aking47]

change the @imagecreatefromjpeg to @imagecreatefrompng

 

[Torch]

Actually, since IE7 has full support for alpha transparency, there is no need to hide the image from it. I modified Chis' code a bit to not do so...

<?
function agent($browser){
   $useragent = $_SERVER['HTTP_USER_AGENT'];
return stripos($useragent,$browser);
}

if(agent('Firefox') !== false or agent('MSIE 7') !== false){
   $img = @imagecreatefrompng("http://www.mysite.com/my_image.png");
   imagedestroy($img);
}
else{
   $img = @imagecreatefromjpg("http://www.mysite.com/my_image.jpg"); //Some other image without alpha
   imagedestroy($img);
}
?>

So, now the image would be shown to FF and IE7 users, but all others will see the second image.