php图片转换成ASCII码

php图片转换成ASCII码，转换后可以直接通过字符串显示图片

        Ascii



                 $image = 'image.jpg';
        // Supports http if allow_url_fopen is enabled
        $image = file_get_contents($image);
        $img = imagecreatefromstring($image);

        $width = imagesx($img);
        $height = imagesy($img);

        for($h=0;$h            for($w=0;$w                $rgb = imagecolorat($img, $w, $h);
                $a = ($rgb >> 24) & 0xFF;
                $r = ($rgb >> 16) & 0xFF;
                $g = ($rgb >> 8) & 0xFF;
                $b = $rgb & 0xFF;
                $a = abs(($a / 127) - 1);
                if($w == $width){
                    echo '';
                }else{
                   echo '#';
                }
            }
        }
        ?>

转换成, php, ASCII