I can not claim to be a student of PHP, although I have been looking at it for a while. Sometimes, I can notice a problem and adjust it, but usually not. I am simply a struggling website owner:(
I have had a site, teambuick.com for many years. I have a program running on my VBulletin board called Garage which used to be supported, but is no longer. It has been throwing some errors. I managed to fix the first one as others had had the same problem. The next most common error is this one:
[26-Nov-2016 14:47:36 UTC] PHP Warning: imagedestroy() expects parameter 1 to be resource, null given in /home/teambuic/public_html/forums/garage_attachment.php on line 167
line 167 reads: imagedestroy($watermark);
Thanks