从imageCreateFromBMP（$ src）获取图像php的宽度和高度

Question

我想知道使用imageCreateFromBMP（$ src）而不是$ src从返回图像中获取图像的图像宽度和高度。我怎样才能做到这一点？

$src = 'four.bmp'; //src of image
$im = imagecreatefrombmp($src); 
list($width, $height) = GetImageSize($im); // it doesnot work though it takes string 
echo 'Image width '.$width.'</br>';
echo 'Image height '.$height.'</br>';

Answer 1

imagesx()和imagesy()获取图片资源

• http://php.net/manual/en/function.imagesx.php
• http://php.net/manual/en/function.imagesy.php

示例：

$src = 'four.bmp'; //src of image
$im = imagecreatefrombmp($src); 
$width = imagesx($im);
$height = imagesy($im);
echo 'Image width '.$width.'</br>';
echo 'Image height '.$height.'</br>';