Code for uploading images and creating thumbnails in the phpGD Library

Code for uploading images and creating thumbnails in the phpGD Library

Image Upload -bbs.it-home.org File upload (only jpg images can be uploaded) 2. process the page upload_img.php // Save the uploaded image $ Uploadfile = "upfiles/". $ _ FILES ['upfile'] ['name']; // Thumbnail storage address $ Smallfile = "upfiles/small _". $ _ FILES ['upfile'] ['name']; If ($ _ FILES ['upfile'] ['type']! = "Image/jpeg ") { Echo 'file type error '; } Else { Move_uploaded_file ($ _ FILES ['upfile'] ['tmp _ name'], $ uploadfile); // upload a file $ DstW = 200; // Thumbnail width $ Dsomething = 200; // The height of the thumbnail. $ Src_image = ImageCreateFromJPEG ($ uploadfile ); $ SrcW = ImageSX ($ src_image); // Obtain the image width $ SrcH = ImageSY ($ src_image); // Obtain the image height $ Dst_image = ImageCreateTrueColor ($ dstW, $ dsomething ); ImageCopyResized ($ dst_image, $ src_image, 0, 0, 0, $ dstW, $ dsomething, $ srcW, $ srcH ); ImageJpeg ($ dst_image, $ smallfile ); Echo 'file uploaded successfully '; Echo ""; } ?> The above code is relatively simple. if you are interested, you can study the gd library function in the php Manual.