[英]Uploading PNG to Website Server
我看到了很多其他主题,并且都尝试了全部。 有人可以帮忙为什么这个脚本不能上传PNG文件吗? 正在显示空白的PNG图像。
$image = $_FILES['file']['tmp_name'];
$image_name = $_FILES['file']['name'];
$ext = pathinfo($image_name, PATHINFO_EXTENSION);
$location = "Profiles/{$user}/Picture/{$image_name}";
$new_image = imagecreatetruecolor(100, 100);
$source_image = imagecreatefrompng($image);
imagealphablending($source_image, false);
imagesavealpha($source_image, true);
imagealphablending($new_image, false);
imagesavealpha($new_image, true);
imagecopyresampled($new_image, $image, 0, 0, 0, 0, 100, 100, $image_width, $image_height);
imagepng($new_image, '../' . $location, 9);
您没有声明$image_width
或$image-height
,而是在imagecopyresampled()
中引用$image
而不是$source_image
。
我也得到了纯白色的图像,但是在此之后,我得到了预期的结果:
$image = $_FILES['file']['tmp_name'];
$image_name = $_FILES['file']['name'];
$ext = pathinfo($image_name, PATHINFO_EXTENSION);
$location = "Profiles/{$user}/Picture/{$image_name}";
$new_image = imagecreatetruecolor(100, 100);
$source_image = imagecreatefrompng($image);
// Get the width & height of the uploaded image.
$image_width = imagesx($source_image);
$image_height = imagesy($source_image);
imagealphablending($source_image, false);
imagesavealpha($source_image, true);
imagealphablending($new_image, false);
imagesavealpha($new_image, true);
imagecopyresampled($new_image, $source_image, 0, 0, 0, 0, 100, 100, $image_width, $image_height);
imagepng($new_image, '../' . $location, 9);
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