[ask for correction] yahoo messenger with Custom Status image

I hope this goes to the right section. If it is not, Please kindly remove it to proper section. Thanks.


ok, my goal is to change Yahoo messenger standard online status images which I can get from the code below :

<a href=”ymsgr:sendIM?user_id”>
<img src=”http://opi.yahoo.com/online?u=user_id&m=g&t=2” border=”0″/></a>

so I made a script. and it looks like this :

<?php
# make header image PNG
header("Content-Type: image/png");
# check to yahoo with curl function in php
$cURL = curl_init();
curl_setopt($cURL, CURLOPT_URL, "http://opi.yahoo.com/online?u=valkedin&m=s");
curl_setopt($cURL, CURLOPT_RETURNTRANSFER, 1);
$strPage = curl_exec($cURL);
curl_close($cURL);

# if offline, variable will be changed to gambar offline file
if ($strPage=="valkedin is NOT ONLINE")
{$gambar="http://www.webaddress.com/images/ym/ymoff.png";}
#if online, variable will be changed to gambar online file
else
{$gambar="http://www.webaddress.com/images/ym/ymon.png";}

# recreate images
$buatgambar = imagecreatefrompng($gambar);
imagepng($buatgambar);
imagedestroy($buatgambar);
?> 

PHP:

the idea is like this :

if we access http://opi.yahoo.com/online?u=valkedin&m=s , it will return the value whether valkedin is ONLINE or valkedin is OFFLINE

so my idea is to change the images based on the result obtained from that status.

if valkedin is online, the online images will occur
if valkedin is offline, the offline images will occur


after I make the file, I saved it with file name ym.php under the folder ym. So the structure will be http://www.webaddress.com/images/ym/ym.php
and the images files will be ymon.png and ymoff.png under the same folder http://www.webaddress.com/images/ym/ymon.png and http://www.webaddress.com/images/ym/ymoff.png



after this, I put the code snippet at my html file <img src="images/ym/ym.php" alt="Yahoo Messenger" /> it is error and this is the error log

[24-Jan-2012 18:43:07] PHP Warning:  imagecreatefromgif() [<a href='function.imagecreatefromgif'>function.imagecreatefromgif</a>]: Filename cannot be empty in /home/xxx/public_html/images/ym/ym.php on line 17
[24-Jan-2012 18:43:07] PHP Warning:  imagegif(): supplied argument is not a valid Image resource in /home/xxx/public_html/images/ym/ym.php on line 18
[24-Jan-2012 18:43:07] PHP Warning:  imagedestroy(): supplied argument is not a valid Image resource in /home/xxx/public_html/images/ym/ym.php on line 19

Code (markup):

Please kindly help me to check the problem.