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//参数：php imagick对象
public function autorotate(Imagick $image)
{
switch ($image->getImageOrientation()) {
case Imagick::ORIENTATION_TOPLEFT:
break;
case Imagick::ORIENTATION_TOPRIGHT:
$image->flopImage();
break;
case Imagick::ORIENTATION_BOTTOMRIGHT:
$image->rotateImage("#000", 180);
break;
case Imagick::ORIENTATION_BOTTOMLEFT:
$image->flopImage();
$image->rotateImage("#000", 180);
break;
case Imagick::ORIENTATION_LEFTTOP:
$image->flopImage();
$image->rotateImage("#000", -90);
break;
case Imagick::ORIENTATION_RIGHTTOP:
$image->rotateImage("#000", 90);
break;
case Imagick::ORIENTATION_RIGHTBOTTOM:
$image->flopImage();
$image->rotateImage("#000", 90);
break;
case Imagick::ORIENTATION_LEFTBOTTOM:
$image->rotateImage("#000", -90);
break;
default: // Invalid orientation
break;
}
$image->setImageOrientation(Imagick::ORIENTATION_TOPLEFT);
return $image;
}
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