WordPress实现彩色标签云方法介绍

function getColorByScale($scale_color, $min_color, $max_color)

$scale_color = $scale_color / 100;
$minr = hexdec(substr($min_color, 1, 2));
$ming = hexdec(substr($min_color, 3, 2));
$minb = hexdec(substr($min_color, 5, 2));
$maxr = hexdec(substr($max_color, 1, 2));
$maxg = hexdec(substr($max_color, 3, 2));
$maxb = hexdec(substr($max_color, 5, 2));
$r = dechex(intval((($maxr - $minr) * $scale_color) + $minr));
$g = dechex(intval((($maxg - $ming) * $scale_color) + $ming));
$b = dechex(intval((($maxb - $minb) * $scale_color) + $minb));3.加上以下代码：

//Colorful Tag Cloud start

$r = dechex(rand(0,255));
$g = dechex(rand(0,196));
$b = dechex(rand(0,255));

function colorCloud($text) {
$text = preg_replace_callback('||i', 'colorCloudCallback', $text);
return $text;
}
function colorCloudCallback($matches) {
$text = $matches[1];
$color = dechex(rand(0,16777215));
$pattern = '/style=('|")(.*)('|")/i';
$text = preg_replace($pattern, "style="color:#{$color};$2;"", $text);
return "";
}
add_filter('wp_tag_cloud', 'colorCloud', 1);