如何从画布中获取图像大小？

Question

是否可以从画布中获取像素大小？

E.g。我知道我可以直接从图像中获得尺寸：

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

但我想从画布中获取它。 E.g：

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

Answer 1

尝试：

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

http://es1.php.net/manual/en/function.imagesx.php和http://es1.php.net/manual/en/function.imagesy.php

的详细信息