manage uploaded files, and manipulate images in many ways
through an HTML form, a Flash uploader, XMLHttpRequest or on local files.
Supported formats are PNG, JPG, GIF and BMP.
可以加边框，
示例：
一，操作本地文件
if(file_exists($localfile)){//本地文件
$handle = new upload($localfile);//操作本地文件
if ($handle->uploaded) {
$handle->file_name_body_pre = 'thumb_'; //目标文件在原文件基础上加的前缀
$handle->image_resize = true;
$handle->image_x = 100;
$handle->image_ratio_y = true;
$handle->process($localpath); //目的文件保存路径
if($handle->processed) {
//$handle->clean();//delete the original uploaded file
echo_1('ok');return;
}else{
echo_0($handle->error);return;
}
}else{
echo_0($handle->error);return;
}
}else{
echo_0('upload failed');return;
}
参考：