functionubb($Text){

$Text=htmlspecialchars($Text);

$Text=ereg_replace("rn","<br>",$Text);

$Text=ereg_replace("r","<br>",$Text);

$Text=nl2br($Text);

$Text=preg_replace("/t/is","",$Text);

$Text=preg_replace("/[h1](.+?)[/h1]/is","<h1>1</h1>",$Text);

$Text=preg_replace("/[h2](.+?)[/h2]/is","<h2>1</h2>",$Text);

$Text=preg_replace("/[h3](.+?)[/h3]/is","<h3>1</h3>",$Text);

$Text=preg_replace("/[h4](.+?)[/h4]/is","<h4>1</h4>",$Text);

$Text=preg_replace("/[h5](.+?)[/h5]/is","<h5>1</h5>",$Text);

$Text=preg_replace("/[h6](.+?)[/h6]/is","<h6>1</h6>",$Text);

$Text=preg_replace("/[url](http://.+?)[/url]/is","<ahref=1>1</a>",$Text);

$Text=preg_replace("/[url](.+?)[/url]/is","<ahref="http://1">http://1</a>",$Text);

$Text=preg_replace("/[url=(http://.+?)](.*)[/url]/is","<ahref=1>2</a>",$Text);

$Text=preg_replace("/[url=(.+?)](.*)[/url]/is","<ahref=http://1>2</a>",$Text);

$Text=preg_replace("/[img](.+?)[/img]/is","<imgsrc=1>",$Text);

$Text=preg_replace("/[color=(.+?)](.+?)[/color]/is","<fontcolor=1>2</font>",$Text);

$Text=preg_replace("/[size=(.+?)](.+?)[/size]/is","<fontsize=1>2</font>",$Text);

$Text=preg_replace("/[sup](.+?)[/sup]/is","¹",$Text);

$Text=preg_replace("/[sub](.+?)[/sub]/is","₁",$Text);

$Text=preg_replace("/[pre](.+?)[/pre]/is","<pre>1</pre>",$Text);

$Text=preg_replace("/[email](.+?)[/email]/is","<ahref=1>1</a>",$Text);

$Text=preg_replace("/[i](.+?)[/i]/is","<i>1</i>",$Text);

$Text=preg_replace("/[b](.+?)[/b]/is","<b>1</b>",$Text);

$Text=preg_replace("/[quote](.+?)[/quote]/is","<blockquote><fontsize='2'face='CourierNew'>quote:</font><hr>1<hr></blockquote>",$Text);

$Text=preg_replace("/[code](.+?)[/code]/is","<blockquote><fontsize='2'face='CourierNew'>code:</font><hrcolor='lightblue'><i>1</i><hrcolor='lightblue'></blockquote>",$Text);

$Text=preg_replace("/[sig](.+?)[/sig]/is","<divstyle='text-align:left;color:darkgreen;margin-left:5%'><br><br>--------------------------<br>1<br>--------------------------</div>",$Text);

return$Text;

}

functionstr($msg){

global$admin;

if(!$admin[html])$msg=htmlspecialchars($msg);

if($admin[ubb])$msg=ubb($msg);

$msg=nl2br($msg);#处理message

$msg=str_replace("n","",$msg);#处理message

$msg=str_replace("r","",$msg);#处理message

return$msg;

}

functionerror($msg){

global$admin;

?>

中的

$Text=preg_replace("/[h2](.+?)[/h2]/is","<h2>1</h2>",$Text);

里面的("/[h2](.+?)[/h2]/is","<h2>1</h2>",$text)

/[h2](.+?)[/h2]/is转化成<h2>1</h2>

/[h2](.+?)[/h2]/is里面的这些"/(.+?)"之类的符号是怎么看的?是什么意思?

______________________________________________________________________________________________

是转意，本身是特殊符号，如果要作为普通字符就要用来转意，就是说表示()也是特殊符号，所以要用转意

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