如何從畫布獲取圖像大小？

Question

是否可以從畫布獲取圖像大小像素？

E.g.我知道我可以實現它直接從圖像中獲得大小：

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

但我想從畫布中獲取它。例如： -

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

Answer 1

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

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

細節和http://es1.php.net/manual/en/function.imagesy.php