php Ubb代码编辑器函数代码

<?php 
/* 
php Ubb代码编辑器 
*/ 
function get_ubb($ubb){ 
$ubb=preg_replace("/([B])(.*)([/B])/","<B>\2</B>" ,$ubb);//替换B粗体字 
$ubb=preg_replace("/([I])(.*)([/I])/","<I>\2</I>" ,$ubb); 
$ubb=preg_replace("/([U])(.*)([/U])/","<U>\2</U>" ,$ubb); 
$ubb=preg_replace("/([LEF])(.*)([/LEF])/","<div align=left>\2</div>" ,$ubb); 
$ubb=preg_replace("/([MID ])(.*)([/MID ])/","<div align=center>\2</div>" ,$ubb); 
$ubb=preg_replace("/([RIG])(.*)([/RIG])/","<div align=right>\2</div>" ,$ubb); 
$ubb=preg_replace("/([LINK])(.*)([/LINK])/","<a href=\2>\2</a>",$ubb); 
$ubb=preg_replace("/([Email])(.*)([/Email])/","<a href=mailto:\2>\2</a>",$ubb); 
$ubb=preg_replace("/([IMAGE])(.*)([/IMAGE])/","<img src=\2>",$ubb); 
$ubb=preg_replace("/([FLASH])(.*)([/FLASH])/","<OBJECT codeBase=http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=4,0,2,0 classid=clsid:D27CDB6E-AE6D-11cf-96B8-444553540000 width=400 height=400><PARAM NAME=movie VALUE="\2"><PARAM NAME=quality VALUE=high><embed src="\2" quality=high pluginspage='http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash' type='application/x-shockwave-flash' width=400 height=400 ></embed></OBJECT>" ,$ubb); 
$ubb=preg_replace("/([MUSIC])(.*)([/MUSIC])/","<embed src=\2 autostart=false loop=3>" ,$ubb); 
$ubb=preg_replace("/([PHOTO name=)([0-9]*)(])/","<img src=Ubb_img/biaoqing/\2.gif >" ,$ubb); 
$ubb=preg_replace("/([FONT=)(.{1,10})(])(.*)([/FONT])/","<div style=font:\2>\4</div>" ,$ubb); 
$ubb=preg_replace("/([FONT-SIZE=)([0-9]*)(])(.*)([/FONT-SIZE])/","<div style=font-size:\2px>\4</div>" ,$ubb); 
$ubb=preg_replace("/([FONT-COLOR=)(.{1,10})(])(.*)([/FONT-COLOR])/","<div style=color:\2>\4</div>" ,$ubb); 
//$ubb=preg_replace("/([])(.*)([/])/","" ,$ubb); 
return $ubb; 
} 
$str=get_ubb($_POST['cont']); 
$str="<div style=font:宋体>[FONT=黑体]asdasd</div><div style=font:Georgia>asdasdas[/FONT]</div>"; 
echo get_ubb($str); 
?>