how to make a jpg image

IFR

i want to make an avatar for a forum boardwhich returns the user's ip. However the file extension is .php and the forum doesnt allow .php extension so i would like to know how do you generate a .jpg file. My webhost use IIS 5.0.

avatar.php

<?php
    header ("Content-type: image/png"); 
    $im = @ImageCreate (150, 15) 
            or die ("Error");         

    $background_color = ImageColorAllocate ($im, 255, 255, 255);
	$col = ImageColorAllocate ($im, 0, 0, 0);
	$txt="IP:$REMOTE_ADDR";
	ImageString ($im, 4, 0, 0, $txt, $col); 
    ImagePng ($im); 
?>

thank you

tekky

http://us4.php.net/manual/en/function.imagejpeg.php

helps to look at similiar functions to what you have already used....

IFR

well i changed "image/png" to "image/jpeg" and ImagePng ($im); to Imagejpeg ($im); then i renamed avatar.php to .jpg but it just show up the source code but not the pic😕

tekky

Originally posted by IFR
well i changed "image/png" to "image/jpeg" and ImagePng ($im); to Imagejpeg ($im); then i renamed avatar.php to .jpg but it just show up the source code but not the pic😕

because .jpg isnt a PHP extension that gets parsed.....

since it seems blatant that you didnt read the imagejpeg HELP file.... try adding a filename as the second parameter of iamgejpeg() :rolleyes:

IFR

aww i dont get it
im such a noob 🙁

parawizard

to bad the user above wants to be a pain :rolleyes:

heres how it works

int imagejpeg ( resource image [, string filename [, int quality]])

string filename is replaced with the file name of the PHP file ?

im not sure but I think the string filename is to output it to a file

so i think its like this

int imagejpeg ( image.php [, " " [, int quality]])

tekky

Originally posted by parawizard
to bad the user above wants to be a pain :rolleyes:
.....

Yah too bad I pointed him to exactly what he needed, then answered his next question :rolleyes:

to clarify on the use of the function....

int imagejpeg ( resource image [, string filename [, int quality]])

imagejpeg($imgRes, $filename_to_write_image_to);

$imgRes would be the resource identifier you created with whatever method of image_create you used....

$filename_to_write_image_to is just that, the filename you want the image saved as....

to get all this to work with your forum though, you will need to modify the forum to accept PHP extensions for avatars... which obviously could be a security risk.

quality is an optional variable... I've never used it...

IFR

well i have seen some people has a dynamic image with .jpg extension and it shows your ip for example

tekky

probably something as simple as making HTACCESS force .jpg to be parsed by PHP then using a .jpg named php script to load and modify the image, then output it....

it can be done 😉

[edit -- if you get nosy and do some properties on that sig you posted the link to, its named .jpg but its file format is PNG....

that raise any flags? 😃 --]

tekky

I hate to use this account for an example... but...

a php "jpg" png file

IFR

yeah i know
the code for .htaccess is :

ForceType application/x-httpd-php

but the problem is that my host use IIS(thats why i mentioned it on the first post) and not apache... :/

BTW your link doesnt work

tekky

hmmm someone broke it... or... the hosting company pulled it it seems.... thats not good.... UGH it will be up again later

IFR

well looks liek its hopeless 🙁