php图片等比例缩放,
php图片等比例缩放,
新建文件index.php,需要在统计目录下有个图片为q.jpg(可根据源码进行更改图片的名称)
源代码如下:
$filename="q.jpg";
$per=0.3;
list($width, $height)=getimagesize($filename);
$n_w=$width*$per;
$n_h=$height*$per;
$new=imagecreatetruecolor($n_w, $n_h);
$img=imagecreatefromjpeg($filename);
//拷贝部分图像并调整
imagecopyresized($new, $img,0, 0,0, 0,$n_w, $n_h, $width, $height);
//图像输出新图片、另存为
imagejpeg($new, "q1.jpg");
imagedestroy($new);
imagedestroy($img);
?>
使用浏览器运行过后,在index.php同级的目录下会有个q1.jpg,这个图片就是等比例缩放后的图片,路径可以自己在源代码里面更改,放在自己的项目当中去或写个方法也行

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