目前，我可以上传jpg文件，并将它们另存为jpg文件。显然我无法上传/保存png文件，因为它很难设置为jpg。我正在尝试找出如何从jpg移到仅允许png，jpg和jpeg的方式。
public static function createAvatar()
{
// check if upload fits all rules
AvatarModel::validateImageFile();
// create a jpg file in the avatar folder, write marker to database
$target_file_path = Config::get('PATH_AVATARS') . Session::get('user_id');
AvatarModel::resizeAvatarImage($_FILES['avatar_file']['tmp_name'], $target_file_path, Config::get('AVATAR_SIZE'), Config::get('AVATAR_SIZE'), Config::get('AVATAR_JPEG_QUALITY'));
AvatarModel::writeAvatarToDatabase(Session::get('user_id'));
Session::set('user_avatar_file', AvatarModel::getPublicUserAvatarFilePathByUserId(Session::get('user_id')));
Session::add('feedback_positive', Text::get('FEEDBACK_AVATAR_UPLOAD_SUCCESSFUL'));
return true;
}
public static function resizeAvatarImage($source_image, $destination, $final_width = 130, $final_height = 130, $quality = 8)
{
list($width, $height) = getimagesize($source_image);
if (!$width || !$height) {
return false;
}
//saving the image into memory (for manipulation with GD Library)
$myImage = imagecreatefromjpeg($source_image);
// calculating the part of the image to use for 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, maybe edit this for square avatars
$thumb = imagecreatetruecolor($final_width, $final_height);
imagecopyresampled($thumb, $myImage, 0, 0, $x, $y, $final_width, $final_height, $smallestSide, $smallestSide);
// add '.jpg' to file path, save it as a .jpg file with our $destination_filename parameter
$destination .= '.jpg';
imagejpeg($thumb, $destination, $quality);
// delete "working copy"
imagedestroy($thumb);
if (file_exists($destination)) {
return true;
}
// default return
return false;
}
public static function writeAvatarToDatabase($user_id)
{
$database = DatabaseFactory::getFactory()->getConnection();
$query = $database->prepare("UPDATE users SET user_has_avatar = TRUE WHERE user_id = :user_id LIMIT 1");
$query->execute(array(':user_id' => $user_id));
}
这是问题所在
$destination .= '.jpg';
imagejpeg($thumb, $destination, $quality);
我试过在文件类型上添加一个开关，然后根据文件具有的文件类型进行imagejpeg / png / jpg（,,,）的处理，但似乎无法通过.tmp文件，因此该文件不起作用。
有任何想法吗？
您将需要从头开始将图像创建为预期文件。这是我使用的课程，然后添加到您的课程中。您可以从一个类复制到另一个类，但是您至少可以看到需要更改的地方：
class AvatarModel
{
public static function resizeAvatarImage($source_image, $destination, $final_width = 130, $final_height = 130, $quality = 8)
{
// Initiate class
$ImageMaker = new ImageFactory();
// Here is just a test landscape sized image
$source_image = 'http://media1.santabanta.com/full6/Outdoors/Landscapes/landscapes-246a.jpg';
// This will save the file to disk. $destination is where the file will save and with what name
// $destination = 'image60px.jpg';
// $ImageMaker->Thumbnailer($source_image,$final_width,$final_height,$destination,$quality);
// This example will just display to browser, not save to disk
$ImageMaker->Thumbnailer($source_image,$final_width,$final_height,false,$quality);
}
}
class ImageFactory
{
public $destination;
protected $original;
public function FetchOriginal($file)
{
$size = getimagesize($file);
$this->original['width'] = $size[0];
$this->original['height'] = $size[1];
$this->original['type'] = $size['mime'];
return $this;
}
public function Thumbnailer($thumb_target = '', $width = 60,$height = 60,$SetFileName = false, $quality = 80)
{
// Set original file settings
$this->FetchOriginal($thumb_target);
// Determine kind to extract from
if($this->original['type'] == 'image/gif')
$thumb_img = imagecreatefromgif($thumb_target);
elseif($this->original['type'] == 'image/png') {
$thumb_img = imagecreatefrompng($thumb_target);
$quality = 7;
}
elseif($this->original['type'] == 'image/jpeg')
$thumb_img = imagecreatefromjpeg($thumb_target);
else
return false;
// Assign variables for calculations
$w = $this->original['width'];
$h = $this->original['height'];
// Calculate proportional height/width
if($w > $h) {
$new_height = $height;
$new_width = floor($w * ($new_height / $h));
$crop_x = ceil(($w - $h) / 2);
$crop_y = 0;
}
else {
$new_width = $width;
$new_height = floor( $h * ( $new_width / $w ));
$crop_x = 0;
$crop_y = ceil(($h - $w) / 2);
}
// New image
$tmp_img = imagecreatetruecolor($width,$height);
// Copy/crop action
imagecopyresampled($tmp_img, $thumb_img, 0, 0, $crop_x, $crop_y, $new_width, $new_height, $w, $h);
// If false, send browser header for output to browser window
if($SetFileName == false)
header('Content-Type: '.$this->original['type']);
// Output proper image type
if($this->original['type'] == 'image/gif')
imagegif($tmp_img);
elseif($this->original['type'] == 'image/png')
($SetFileName !== false)? imagepng($tmp_img, $SetFileName, $quality) : imagepng($tmp_img);
elseif($this->original['type'] == 'image/jpeg')
($SetFileName !== false)? imagejpeg($tmp_img, $SetFileName, $quality) : imagejpeg($tmp_img);
// Destroy set images
if(isset($thumb_img))
imagedestroy($thumb_img);
// Destroy image
if(isset($tmp_img))
imagedestroy($tmp_img);
}
}
AvatarModel::resizeAvatarImage();
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我来说两句