本文实例讲述了php实现过滤UBB代码的类。分享给大家供大家参考。具体如下：

PHP代码如下：
复制代码 代码如下:class Day{
   function ubb($Text) {      /// UBB代码转换
        //$Text=htmlspecialchars($Text);
        //$Text=ereg_replace("\r\n","<br>",$Text);
        $Text=ereg_replace("\[br\]","<br />",$Text);
        $Text=nl2br($Text);
        $Text=stripslashes($Text);
        $Text=preg_replace("/\\t/is"," ",$Text);
        $Text=preg_replace("/\[url\](http:\/\/.+","<a href=\"\\1\" target=\"new\"><u>\\1</u></a>",$Text);
        $Text=preg_replace("/\[url\](.+","<a href=\"http://\\1\" target=\"new\"><u>\\1</u></a>",$Text);
        $Text=preg_replace("/\[url=(http:\/\/.+","<a href=\"\\1\" target=\"new\"><u>\\2</u></a>",$Text);
        $Text=preg_replace("/\[url=(.+","<a href=\"http://\\1\" target=\"new\"><u>\\2</u></a>",$Text);
        $Text=preg_replace("/\[color=(.+","<font color=\"\\1\">\\2</font>",$Text);
        $Text=preg_replace("/\[font=(.+","<font face=\"\\1\">\\2</font>",$Text);
        $Text=preg_replace("/\[email=(.+","<a href=\"mailto:\\1\"><u>\\2</u></a>",$Text);
        $Text=preg_replace("/\[email\](.+","<a href=\"mailto:\\1\"><u>\\1</u></a>",$Text);
        $Text=preg_replace("/\[i\](.+","<i>\\1</i>",$Text);
        $Text=preg_replace("/\[u\](.+","<u>\\1</u>",$Text);
        $Text=preg_replace("/\[b\](.+","<b>\\1</b>",$Text);
        $Text=preg_replace("/\[fly\](.+","<marquee width=\"98%\" behavior=\"alternate\" scrollamount=\"3\">\\1</marquee>",$Text);
        $Text=preg_replace("/\[move\](.+","<marquee width=\"98%\" scrollamount=\"3\">\\1</marquee>",$Text);
        $Text=preg_replace("/\[shadow=([#0-9a-z]{1,10})\,([0-9]{1,3})\,([0-9]{1,2})\](.+","<table width=\"*\"><tr><td style=\"filter:shadow(color=\\1, direction=\\2 ,strength=\\3)\">\\4</td></tr></table>",$Text);
        return $Text;
  }
}

希望本文所述对大家的php程序设计有所帮助。