十四节 图片转ASCII码图
最后更新于：2022-04-02 01:47:26
>[success] # 图片转ASCII码图
* [案例图](http://www.degraeve.com/img2txt.php)
* [手把手教你图片转ASCII码图](https://www.cnblogs.com/jelly7723/p/5657891.html)
* [图片转字符](https://segmentfault.com/a/1190000007692741)
~~~php
= $len) {
$index = $len - 1;
}
return $char[(int)$index];
}
function tosmallim($const = 100, $width, $height, $image)
{
if ($width > $const) {
$times = floor($width / $const);
$smwidth = $const;
$smheight = floor($height / $times);
$im = imagecreatetruecolor($smwidth, $smheight);
imagecopyresampled($im, $image, 0, 0, 0, 0, $smwidth, $smheight, $width, $height);
return [$im, $smwidth, $smheight];
}
return [$image, $width, $height];
}
$imname = 'http://images2015.cnblogs.com/blog/763758/201606/763758-20160612082543871-1901077809.png';
//返回一图像标识符，代表了从给定的文件名取得的图像
$image = ImageCreateFromPng($imname);
//$im = ImageCreateFromJpeg($imname);
$size = getimagesize($imname);
$width = $size[0];
$height = $size[1];
list($image, $width, $height) = tosmallim(100, $width, $height, $image);
$arr = [];
for ($i = 0; $i < $height; $i++) {
for ($j = 0; $j < $width; $j++) {
$rgb = ImageColorat($image, $j, $i);
$r = ($rgb >> 16) & 0xFF;
$g = ($rgb >> 8) & 0xFF;
$b = $rgb & 0xFF;
$arr[] = floor(($r + $g + $b) / 3);
}
}
$num = count(array_unique($arr));
$str = '';
for ($i = 0; $i < $height; $i++) {
for ($j = 0; $j < $width; $j++) {
$rgb = ImageColorat($image, $j, $i);
$r = ($rgb >> 16) & 0xFF;
$g = ($rgb >> 8) & 0xFF;
$b = $rgb & 0xFF;
$str .= tochars($r, $g, $b, $num);
}
$str .= '
'; } echo $str . ''; ~~~
';
'; } echo $str . ''; ~~~