PHP menskalakan imej Apabila saiz imej kecil (contohnya, lebarnya kurang daripada 100 piksel), aksara bercelaru akan dikeluarkan.

Question

    $src_img=imagecreatefrompng('example.png');//源图片
    $goal_img= imagecreatetruecolor($goal_width, $goal_height);//目标图片
    $goal_img= imagecreatetruecolor($goal_width, $goal_height);//目标图片  ($smg_copy 片 , $smg_copy , 0, 0, 0 , $goal_width, $goal_height, $img_width, $img_height);//缩放
    //输出
    header('content-type:image/png');
    imagepng($smg_img );  imagedestroy($goal_img);