如何从画布获取图像大小？

Question

是否可以从画布获取图像大小像素？

E.g.我知道我可以实现它直接从图像中获得大小：

list($width, $height) = @getimagesize($_FILES['inputFieldName']['tmp_name']) 

但我想从画布中获取它。例如： -

$canvas = imagecreatefromjpeg($image_path); 
//Get image size from $canvas 

Answer 1

尝试：在http://es1.php.net/manual/en/function.imagesx.php

$canvas = imagecreatefromjpeg($image_path); 
$width = imagesx($canvas); 
$height = imagesy($canvas); 

细节和http://es1.php.net/manual/en/function.imagesy.php