php----字符串内敏感词替换

$badword = array(

'魔客吧','www.moke8.ccom'

);

$badword1 = array_combine($badword,array_fill(0,count($badword),'*'));

$bb = '我的网站的名字叫做魔客吧，我的网站的网址是www.moke8.com';

$str = strtr($bb, $badword1);

echo $str;

?>