很简单的按照最大宽高来缩略图片的代码，方便新手和懒得自己写的人
- function thumb($imagefile, $maxwidth, $maxheight) {
- $dim = getimagesize($imagefile);
- $width = $dim[0]; //原图宽度
- $height = $dim[1]; //原图高度
- $original = imagecreatefromjpeg($imagefile);
-
- $thcrown = $maxwidth/$maxheight; //缩略图最大宽度与最大高度比
- $crown = $width/$height; //原图宽高比
- if($crown/$thcrown >= 1){
- $thumbWidth = $maxwidth;
- $thumbHeight = $maxwidth/$crown;
- } else {
- $thumbHeight = $maxheight;
- $thumbWidth = $maxheight*$crown;
- }
-
- $thumb = imagecreatetruecolor($thumbWidth, $thumbHeight);
- imagecopyresampled($thumb, $original, 0, 0, 0, 0, $thumbWidth, $thumbHeight, $width, $height);
- return $thumb;
- }
|
本網站聲明
本文內容由網友自願投稿，版權歸原作者所有。本站不承擔相應的法律責任。如發現涉嫌抄襲或侵權的內容，請聯絡admin@php.cn
作者最新文章
-
2024-10-22 09:46:29
-
2024-10-13 13:53:41
-
2024-10-12 12:15:51
-
2024-10-11 22:47:31
-
2024-10-11 19:36:51
-
2024-10-11 15:50:41
-
2024-10-11 15:07:41
-
2024-10-11 14:21:21
-
2024-10-11 12:59:11
-
2024-10-11 12:17:31
