Сохраните EXIF ​​и поверните изображение в переполнении стека

Мой сайт размещен на сервере общего хостинга (Linux), и я не думаю, что класс GD imageRotate доступен для меня.

Каков наилучший способ поворота изображений на основе ориентации EXIF? Это текущий способ, который я пытаюсь, но получаю `Вызов неопределенного метода resize :: rotateImage () ‘

Спасибо за вашу помощь

if ($exif['Orientation']){
$ort = $exif['Orientation'];

switch($ort)
{
case 1: // nothing
break;

case 2: // horizontal flip
$resizeObj->flipImage($path,1);
break;

case 3: // 180 rotate left
$resizeObj->rotateImage($path,180);
break;

case 4: // vertical flip
$resizeObj->flipImage($path,2);
break;

case 5: // vertical flip + 90 rotate right
$resizeObj->flipImage($path, 2);
$resizeObj->rotateImage($path, -90);
break;

case 6: // 90 rotate right
$resizeObj->rotateImage($path, -90);
break;

case 7: // horizontal flip + 90 rotate right
$resizeObj->flipImage($path,1);
$resizeObj->rotateImage($path, -90);
break;

case 8:    // 90 rotate left
$resizeObj->rotateImage($path, 90);
break;
}
}

if (($resizeObj->width > 600) || ($resizeObj->height > 600)){

// *** 2) Resize image (options: exact, portrait, landscape, auto, crop)
$resizeObj -> resizeImage(600, 600, 'auto');

// *** 3) Save image
$resizeObj -> saveImage($path, 95);

}

Изменить размер класса

  # ========================================================================#
#
#  Author:    Jarrod Oberto
#  Version:   1.0
#  Date:      17-Jan-10
#  Purpose:   Resizes and saves image
#  Requires : Requires PHP5, GD library.
#  Usage Example:
#                     include("classes/resize_class.php");
#                     $resizeObj = new resize('images/cars/large/input.jpg');
#                     $resizeObj -> resizeImage(150, 100, 0);
#                     $resizeObj -> saveImage('images/cars/large/output.jpg', 100);
#
#
# ========================================================================#Class resize
{
// *** Class variables
private $image;
public $width;
public $height;
private $imageResized;

function __construct($fileName)
{
// *** Open up the file
$this->image = $this->openImage($fileName);

// *** Get width and height
$this->width  = imagesx($this->image);
$this->height = imagesy($this->image);
}

## --------------------------------------------------------

private function openImage($file)
{
// *** Get extension
$extension = strtolower(strrchr($file, '.'));

switch($extension)
{
case '.jpg':
case '.jpeg':
$img = @imagecreatefromjpeg($file);
break;
case '.gif':
$img = @imagecreatefromgif($file);
break;
case '.png':
$img = @imagecreatefrompng($file);
break;
default:
$img = false;
break;
}
return $img;
}

## --------------------------------------------------------

public function resizeImage($newWidth, $newHeight, $option="auto")
{
// *** Get optimal width and height - based on $option
$optionArray = $this->getDimensions($newWidth, $newHeight, $option);

$optimalWidth  = $optionArray['optimalWidth'];
$optimalHeight = $optionArray['optimalHeight'];// *** Resample - create image canvas of x, y size
$this->imageResized = imagecreatetruecolor($optimalWidth, $optimalHeight);
imagecopyresampled($this->imageResized, $this->image, 0, 0, 0, 0, $optimalWidth, $optimalHeight, $this->width, $this->height);// *** if option is 'crop', then crop too
if ($option == 'crop') {
$this->crop($optimalWidth, $optimalHeight, $newWidth, $newHeight);
}
}

## --------------------------------------------------------

private function getDimensions($newWidth, $newHeight, $option)
{

switch ($option)
{
case 'exact':
$optimalWidth = $newWidth;
$optimalHeight= $newHeight;
break;
case 'portrait':
$optimalWidth = $this->getSizeByFixedHeight($newHeight);
$optimalHeight= $newHeight;
break;
case 'landscape':
$optimalWidth = $newWidth;
$optimalHeight= $this->getSizeByFixedWidth($newWidth);
break;
case 'auto':
$optionArray = $this->getSizeByAuto($newWidth, $newHeight);
$optimalWidth = $optionArray['optimalWidth'];
$optimalHeight = $optionArray['optimalHeight'];
break;
case 'crop':
$optionArray = $this->getOptimalCrop($newWidth, $newHeight);
$optimalWidth = $optionArray['optimalWidth'];
$optimalHeight = $optionArray['optimalHeight'];
break;
}
return array('optimalWidth' => $optimalWidth, 'optimalHeight' => $optimalHeight);
}

## --------------------------------------------------------

private function getSizeByFixedHeight($newHeight)
{
$ratio = $this->width / $this->height;
$newWidth = $newHeight * $ratio;
return $newWidth;
}

private function getSizeByFixedWidth($newWidth)
{
$ratio = $this->height / $this->width;
$newHeight = $newWidth * $ratio;
return $newHeight;
}

private function getSizeByAuto($newWidth, $newHeight)
{
if ($this->height < $this->width)
// *** Image to be resized is wider (landscape)
{
$optimalWidth = $newWidth;
$optimalHeight= $this->getSizeByFixedWidth($newWidth);
}
elseif ($this->height > $this->width)
// *** Image to be resized is taller (portrait)
{
$optimalWidth = $this->getSizeByFixedHeight($newHeight);
$optimalHeight= $newHeight;
}
else
// *** Image to be resizerd is a square
{
if ($newHeight < $newWidth) {
$optimalWidth = $newWidth;
$optimalHeight= $this->getSizeByFixedWidth($newWidth);
} else if ($newHeight > $newWidth) {
$optimalWidth = $this->getSizeByFixedHeight($newHeight);
$optimalHeight= $newHeight;
} else {
// *** Sqaure being resized to a square
$optimalWidth = $newWidth;
$optimalHeight= $newHeight;
}
}

return array('optimalWidth' => $optimalWidth, 'optimalHeight' => $optimalHeight);
}

## --------------------------------------------------------

private function getOptimalCrop($newWidth, $newHeight)
{

$heightRatio = $this->height / $newHeight;
$widthRatio  = $this->width /  $newWidth;

if ($heightRatio < $widthRatio) {
$optimalRatio = $heightRatio;
} else {
$optimalRatio = $widthRatio;
}

$optimalHeight = $this->height / $optimalRatio;
$optimalWidth  = $this->width  / $optimalRatio;

return array('optimalWidth' => $optimalWidth, 'optimalHeight' => $optimalHeight);
}

## --------------------------------------------------------

private function crop($optimalWidth, $optimalHeight, $newWidth, $newHeight)
{
// *** Find center - this will be used for the crop
$cropStartX = ( $optimalWidth / 2) - ( $newWidth /2 );
$cropStartY = ( $optimalHeight/ 2) - ( $newHeight/2 );

$crop = $this->imageResized;
//imagedestroy($this->imageResized);

// *** Now crop from center to exact requested size
$this->imageResized = imagecreatetruecolor($newWidth , $newHeight);
imagecopyresampled($this->imageResized, $crop , 0, 0, $cropStartX, $cropStartY, $newWidth, $newHeight , $newWidth, $newHeight);
}

## --------------------------------------------------------

public function saveImage($savePath, $imageQuality="100")
{
// *** Get extension
$extension = strrchr($savePath, '.');
$extension = strtolower($extension);

switch($extension)
{
case '.jpg':
case '.jpeg':
if (imagetypes() & IMG_JPG) {
imagejpeg($this->imageResized, $savePath, $imageQuality);
}
break;

case '.gif':
if (imagetypes() & IMG_GIF) {
imagegif($this->imageResized, $savePath);
}
break;

case '.png':
// *** Scale quality from 0-100 to 0-9
$scaleQuality = round(($imageQuality/100) * 9);

// *** Invert quality setting as 0 is best, not 9
$invertScaleQuality = 9 - $scaleQuality;

if (imagetypes() & IMG_PNG) {
imagepng($this->imageResized, $savePath, $invertScaleQuality);
}
break;

// ... etc

default:
// *** No extension - No save.
break;
}

imagedestroy($this->imageResized);
}## --------------------------------------------------------

}
?>