Php packaging gd Library

The php-encapsulated gd library uses thinkphp of SAEs to implement thumbnails on the local device and SAEs. thumbnails are mainly used on the Waterfall Stream. Otherwise, a picture is 23 MB, which is too slow, I encapsulated one myself and smiled! & Lt ;? PhpclassThumb {set the maximum width to use and display private $ max_widthnull in the editor; private php encapsulates the gd Library

Using thinkphp of sae version can not implement thumbnails on the local and SAEs. thumbnails are mainly used on the Waterfall Stream. Otherwise, a picture is 2 3 M, which is too slow. you can encapsulate it yourself!

  Max_width = $ max_widht; $ this-> file_name = $ file_name; $ this-> water_name = $ water_name;} public function create_image () {// Obtain the ori Image Information list ($ width, $ height, $ type) = getimagesize ($ this-> file_name); // when the original image is larger than the required maximum width, if ($ width> $ this-> max_width) {// get the image compression percentage $ per = $ this-> max_width/$ width; $ new_width = $ width * $ per; $ new_height = $ height * $ per;} else {$ new_height = $ height; $ new_width = $ Width;} // create a true color image $ image_p = imagecreatetruecolor ($ new_width, $ new_height-10); $ image = $ this-> image_obj ($ type, $ this-> file_name); imagecopyresampled ($ image_p, $ image, 0, 0, 0, 0, $ new_width, $ new_height, $ width, $ height ); $ this-> image_dump ($ type, $ image_p, $ this-> file_name); $ this-> water ();} /** generate an image and add a watermark */private function water () {$ water_name = $ this-> water_name; $ dist_name = $ this-> f Ile_name; list ($ dist_width, $ dist_height, $ type) = getimagesize ($ dist_name); $ dist_im = $ this-> image_obj ($ type, $ this-> file_name ); $ water_name = "D:/xampps/htdocs/buyingfeiblog/1/App/Modules/Admin/Tpl/Public/Images/water.png"; list ($ w_width, $ w_height) = getimagesize ($ water_name); // Obtain the image watermark information $ water_src = imagecreatefrompng ($ water_name); // set the image watermark position in the lower right corner $ x = ($ dist_width-$ w_width) /4*3; $ y = ($ Dist_height-$ w_height)/4*3; if (imagecopy ($ dist_im, $ water_src, $ x, $ y, 0, 0, $ w_width, $ w_height )) {imagepng ($ dist_im, $ dist_name); echo "success" ;}else {echo "error" ;}// generate the image type, keep the original image type unchanged when generating different images. private function image_dump ($ type, $ image_p, $ filename) {switch ($ type) {case 1: imagegif ($ image_p, $ filename); $ dis_im = imagecreatefromgif (file_name); break; case 2: imagejpeg ($ image_p, $ this -> File_name); $ dis_im = imagecreatefromjpeg (file_name); break; case 3: imagepng ($ image_p, file_name); $ dis_im = imagecreatefrompng (file_name); break; default :}} // different resource objects are generated based on different images. private function image_obj ($ type, $ filename) {switch ($ type) {// 1 = GIF, 2 = JPG, 3 = PNG, case 1: $ image = imagecreatefromgif ($ filename); break; case 2: $ image = imagecreatefromjpeg ($ filename); break; case 3: $ image = im Agecreatefrompng ($ filename); break; default:} return $ image; }}$ thumb = new Thumb (725, "D:/xampps/htdocs/test/test.jpg "); $ thumb-> create_image (); // create_image?>

It's that simple,
This mainly includes generating a true color chart,
Create graphical object resources
Merge images. OK!