function colordarken($color, $dif=20){ $color = str_replace('#', '', $color); if (strlen($color) != 6){ return '000000'; } $rgb = ''; for ($x=0;$x $c = hexdec(substr($color,(2*$x),2)) - $dif; $c = ($c $rgb .= (strlen($c) } return '#'.$rgb;} //范例：for ($x=1; $x // start color: $c = colordarken('#ff481d', ($x * 3)); print .
\n;}
复制代码
php