這篇文章主要介紹了php生成圖片縮略圖的方法,涉及php操作圖片的技巧,非常具有實用價值,需要的朋友可以參考下
本文實例講述了php生成圖片縮略圖的方法。分享給大家供大家參考。具體如下:
這里需要用到GD2 library
- function make_thumb($src,$dest,$desired_width)
- {
- /* read the source image */
- $source_image = imagecreatefromjpeg($src);
- $width = imagesx($source_image);
- $height = imagesy($source_image);
- /* find the "desired height" of this thumbnail, relative to the desired width */
- $desired_height = floor($height*($desired_width/$width));
- /* create a new, "virtual" image */
- $virtual_image = imagecreatetruecolor($desired_width,$desired_height);
- /* copy source image at a resized size */
- imagecopyresized($virtual_image,$source_image,0,0,0,0,$desired_width,$desired_height,$width,$height);
- /* create the physical thumbnail image to its destination */
- imagejpeg($virtual_image,$dest, 83);
- }
希望本文所述對大家的php程序設計有所幫助。
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