在想象中获得图像尺寸

Question

I'm trying to get the dimensions of images that i converted with imagick. This is my code:

$imagick = new \Imagick();
$imagick->setresolution(300,300);
$imagick->readimage($this->uploadPath . '/original/test.pdf');
$imagick->writeImages($this->uploadPath . "/large/preview-%d.jpg", false);

So i'm reading a multipage pdf file and i'm converting it to seperate jpg files. What i want is to retrieve the jpg file dimensions from each image. Can i do this in an easy way? Or do i first need to write the images to the disc and then loop through each of them again?

Answer 1

What about Imagick::getImageGeometry? (http://www.php.net/manual/en/imagick.getimagegeometry.php)

In your case it should look something like this:

$imagick = new \Imagick();
$imagick->setresolution(300,300);
$imagick->readimage($this->uploadPath . '/original/test.pdf');

$geometryInfo = $imagick->getImageGeometry();

// now $geometryInfo is an associative array with 'width' and 'height' items in it

$imagick->writeImages($this->uploadPath . "/large/preview-%d.jpg", false);

---

Update:

If you want to read concrete page from multipage PDF, try to use such trick:

$pageIndex = 0; // you can create "for/foreach" loop to go through all pages
$imagick->readimage($this->uploadPath . '/original/test.pdf[' . $pageIndex . ']');