ImageCopyResamples()

ImageCopyResized() 函数在所有GD版本中有效,但其缩放图像的.

ImageCopyResamples()介绍

ImageCopyResized() 函数在所有GD版本中有效,但其缩放图像的.

ImageCopyResamples()简介

PHP中缩放图像.

(1):

(2):ImageCopyResampled() ,其像素插值算法得到的.(但该函数的速度比 ImageCopyResized() 慢).

两个函数的参数是一样的.如下:

ImageCopyResampled(dest,src,dy,dx,sx,sy,dw,dh,sw,sh);

ImageCopyResized(dest,src,dy,dx,sx,sy,dw,dh,sw,sh);

ImageCopyResamples()例子

$src = ImageCreateFromJPEG('php.jpg');

$width = ImageSx($src);

$height = ImageSy($src);

$x = $widht/2;

$y = $height/2;

$dst = ImageCreateTrueColor($x,$y);

ImageCopyResampled($dst,$src,0,0,0,0,$x,$y,$widht,$height);

header('Content-Type : image/png');

ImagePNG($det);

?>