php生成图片缩略图的方法_PHP教程

php生成图片缩略图的方法

 具体如下：

这里需要用到GD2 library

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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); }

http://www.bkjia.com/PHPjc/980112.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/980112.htmlTechArticlephp生成图片缩略图的方法 具体如下： 这里需要用到GD2 library 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 function make_thumb($src,$dest,$desired_width) { /* read the...