当对一大堆JPG、PNG和GIF文件进行补丁调整时，PHP意外崩溃并显示以下错误消息:imagecolorsforindex()[function.imagecolorsforindex]:Colorindex226outofrange相关代码片段为:protectedfunctionpreserveTransparency($img,$resized,$ftype){if(($ftype==IMAGETYPE_PNG)||($ftype==IMAGETYPE_GIF)){$tidx=imagecolortransparent($img);if($tidx>=0){$transColo