PHP图像调整大小不起作用

Question

我有一个脚本可以保存图像两次，一个用于高质量，一个用于拇指。图像的移动有效但调整大小没有。有人有线索吗？我安装了GD

$newImgName = RandomString(6) . '_' . rand(10, 99);

$newCoverImg = '../images/news/'. $newImgName .'.jpg';
$newThumbImg = '../images/news/'. $newImgName .'_thumb.jpg';

copy($_POST['article_cover'], $newCoverImg);
copy($_POST['article_cover'], $newThumbImg);

$percent = 0.5;

list($width, $height) = getimagesize($newThumbImg);
$newwidth = $width * $percent;
$newheight = $height * $percent;

$thumb = imagecreatetruecolor($newwidth, $newheight);
$source = imagecreatefromjpeg($newThumbImg);

imagecopyresampled($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);

Answer 1

你应该写 imagecopyresized 而不是 imagecopyresampled 你的代码应该是这样的

$newImgName = RandomString(6) . '_' . rand(10, 99);

$newCoverImg = '../images/news/'. $newImgName .'.jpg';
$newThumbImg = '../images/news/'. $newImgName .'_thumb.jpg';

copy($_POST['article_cover'], $newCoverImg);
copy($_POST['article_cover'], $newThumbImg);

$percent = 0.5;

list($width, $height) = getimagesize($newThumbImg);
$newwidth = $width * $percent;
$newheight = $height * $percent;

$thumb = imagecreatetruecolor($newwidth, $newheight);
$source = imagecreatefromjpeg($newThumbImg);

imagecopyresized($thumb, $source, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);