php公用函数列表[正则]

<?php
/*********************************************************************
* 公用函数列表
* ubb,getip,GoIn,goback,IsInt,InString
* OurHome:
* ~coldwind
* 
* */
/////////////////ubb支持代码函数////////////////////////////
function ubb($Text) { 
  $Text=trim($Text);
  $Text=htmlspecialchars($Text);  
  $Text=ereg_replace("\n","<br>",$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("/\[center\](.+?)\[\/center\]/is","<center>\\1</center>",$Text); 
  $Text=preg_replace("/\[url\](http:\/\/.+?)\[\/url\]/is","<a href=\\1>\\1</a>",$Text); 
  $Text=preg_replace("/\[url\](.+?)\[\/url\]/is","<a href=\"http://\\1\">\\1</a>",$Text); 
  $Text=preg_replace("/\[url=(http:\/\/.+?)\](.*)\[\/url\]/is","<a href=\\1>\\2</a>",$Text); 
  $Text=preg_replace("/\[url=(.+?)\](.*)\[\/url\]/is","<a href=http://\\1>\\2</a>",$Text); 
  $Text=preg_replace("/\[img\](.+?)\[\/img\]/is","<img src=\\1>",$Text); 
  $Text=preg_replace("/\[color=(.+?)\](.+?)\[\/color\]/is","<font color=\\1>\\2</font>",$Text); 
  $Text=preg_replace("/\[size=(.+?)\](.+?)\[\/size\]/is","<font size=\\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","<a href=\\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><font size='1' face='Courier New'>quote:</font><hr>\\1<hr></blockquote>", $Text); 
  $Text=preg_replace("/\[code\](.+?)\[\/code\]/is","<blockquote><font size='1' face='Times New Roman'>code:</font><hr color='lightblue'><i>\\1</i><hr color='lightblue'></blockquote>", $Text); 
  $Text=preg_replace("/\[sig\](.+?)\[\/sig\]/is","<div style='text-align: left; color: darkgreen; margin-left: 5%'><br><br>--------------------------<br>\\1<br>--------------------------</div>", $Text); 
  return $Text; 
}

////////////////取得浏览者的ip地址/////////////////////////////
function getip() { 
   $IP=getenv('REMOTE_ADDR'); 
   $IP_ = getenv('HTTP_X_FORWARDED_FOR'); 
   if (($IP_ != "") && ($IP_ != "unknown")) $IP=$IP_; 
   return $IP; 
} 
function goback($num,$saying){
echo"<table align=\"center\"><tr><td><a href=\"javascript:history.go(-1)\">$saying</a>";
}
///////////////////判断字符串中是否含有array中的某一值/////////////////
function InString($array,$string){
  while(list(,$value)=each($array)){
   if(eregi($value,$string)){
   return true;
   exit;
  }
  }
}
////////////////////链接到某一页面///////////////////////////////////////
function GoIn($addr,$saying){
echo"<table align=\"center\"><tr><td><a href=\"$addr\">$saying</a></td></tr></table>";
}
////////////////////JS返回//////////////////////////////////////////////
function IsInt($string){
  if(ereg("^[0-9]{0,}$",$string)){
  return true;
  }
   else {
  return false;
  }
}
?>