PHP判断一张图片的主色调的代码片段

这段代码可以帮助你判断任意图片的主色调，使用了简单的统计算法实现

1. $i = imagecreatefromjpeg("image.jpg");
3. for ($x=0;$x for ($y=0;$y $rgb = imagecolorat($i,$x,$y);
4. $r = ($rgb >> 16) & 0xFF;
5. $g = ($rgb >> & 0xFF;
6. $b = $rgb & 0xFF;
8. $rTotal += $r;
9. $gTotal += $g;
10. $bTotal += $b;
11. $total++;
12. }
13. }
15. $rAverage = round($rTotal/$total);
16. $gAverage = round($gTotal/$total);
17. $bAverage = round($bTotal/$total);