基本上,我想上传一个图像(我已经排序),并将其缩放到某些约束,如最大宽度和高度,但是保持原始图像的宽高比.
我没有在服务器上安装Imagick – 否则这将很容易.
任何帮助一如以往的赞赏.
谢谢.
编辑：我不需要整个代码或任何东西,只是推动正确的方向将是太棒了.
我已经写了一个这样的代码,用于另一个我完成的项目.我下面复制了它,可能需要一点修补！ (它需要GD库)
这些是它需要的参数：
$image_name - Name of the image which is uploaded $new_width - Width of the resized photo (maximum) $new_height - Height of the resized photo (maximum) $uploadDir - Directory of the original image $moveToDir - Directory to save the resized image
它会将图像缩小或缩小到最大宽度或高度
function createThumbnail($image_name,$new_width,$new_height,$uploadDir,$moveToDir)
{
$path = $uploadDir . '/' . $image_name;
$mime = getimagesize($path);
if($mime['mime']=='image/png') {
$src_img = imagecreatefrompng($path);
}
if($mime['mime']=='image/jpg' || $mime['mime']=='image/jpeg' || $mime['mime']=='image/pjpeg') {
$src_img = imagecreatefromjpeg($path);
}
$old_x = imageSX($src_img);
$old_y = imageSY($src_img);
if($old_x > $old_y)
{
$thumb_w = $new_width;
$thumb_h = $old_y*($new_height/$old_x);
}
if($old_x < $old_y)
{
$thumb_w = $old_x*($new_width/$old_y);
$thumb_h = $new_height;
}
if($old_x == $old_y)
{
$thumb_w = $new_width;
$thumb_h = $new_height;
}
$dst_img = ImageCreateTrueColor($thumb_w,$thumb_h);
imagecopyresampled($dst_img,$src_img,$thumb_w,$thumb_h,$old_x,$old_y);
// New save location
$new_thumb_loc = $moveToDir . $image_name;
if($mime['mime']=='image/png') {
$result = imagepng($dst_img,$new_thumb_loc,8);
}
if($mime['mime']=='image/jpg' || $mime['mime']=='image/jpeg' || $mime['mime']=='image/pjpeg') {
$result = imagejpeg($dst_img,80);
}
imagedestroy($dst_img);
imagedestroy($src_img);
return $result;
}
