(PECL imagick 2, PECL imagick 3)
Imagick::pingImageBlob — Quickly fetch attributes
This method can be used to query image width, height, size, and format without reading the whole image to memory. This method is available if Imagick has been compiled against ImageMagick version 6.2.9 or newer.
imageA string containing the image.
Returns true on success.
Example #1 Using Imagick::pingImageBlob()
Pinging an image from a string
<?php
$image = file_get_contents("test.jpg");
$im = new Imagick();
$im->pingImageBlob($image);
echo $im->getImageWidth() . 'x' . $im->getImageHeight();
?>