不保存图像的图像裁剪 [英] Imagecrop without saving the image

问题描述

我有一堆产品预览图片，但它们不是相同的尺寸。

I have a bunch of product preview images, but they are not the same dimensions.

所以我想知道，是否可以在不保存的情况下裁剪图像？

So i wonder, is it possible to crop an image on the go, without saving it?

这两个链接应该显示我的意思：

These two links should show what i mean:

http ：//xn--nstvedhandel-6cb.dk/alpha_1/？side = vis_annonce& id = 12

http://xn--nstvedhandel-6cb.dk/alpha_1/?side=vis_annonce&id=13

推荐答案

是的，这是我的做法：

//Your Image
$imgSrc = "image.jpg";
list($width, $height) = getimagesize($imgSrc);
$myImage = imagecreatefromjpeg($imgSrc);

// calculating the part of the image thumbnail
if ($width > $height)
{
    $y = 0;
    $x = ($width - $height) / 2;
    $smallestSide = $height;
 } 
 else
 {
    $x = 0;
    $y = ($height - $width) / 2;
    $smallestSide = $width;
 }

 // copying the part into thumbnail
 $thumbSize = 100;
 $thumb = imagecreatetruecolor($thumbSize, $thumbSize);
 imagecopyresampled($thumb, $myImage, 0, 0, $x, $y, $thumbSize, $thumbSize, $smallestSide, $smallestSide);

 //final output
 header('Content-type: image/jpeg');
 imagejpeg($thumb);

这不是非常轻巧的操作，就像其他操作一样，我也建议您在创建后保存缩略图

This is not a verry light operation, like the others i also reccomend you to save the thumbnail after creating it to your file system.

您可能想查看 PHP的GD库。

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