php生成图片缩略图的方法

这篇文章主要介绍了php生成图片缩略图的方法,涉及php操作图片的技巧,非常具有实用价值,需要的朋友可以参考下

本文实例讲述了php生成图片缩略图的方法。分享给大家供大家参考。具体如下：

这里需要用到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); }

希望本文所述对大家的php程序设计有所帮助。

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