functions.php

非常好的问答类网站代码。由PHP+MySQL编写。内容详尽。

<?php
/*********************************************************************
* 公用函数列表
* 
*/
/////////////////ubb支持代码函数////////////////////////////
function ubb($Text) 
{ 
  	$Text=trim($Text);
  	$Text=htmlspecialchars($Text); 
  	$Text=stripslashes($Text); 
  	$Text=ereg_replace("\n","<br>",$Text); 
  	$Text=ereg_replace("\r","",$Text);
  	$Text=preg_replace("/\\t/is","  ",$Text); 
  	$Text=ereg_replace("\|","│",$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\">http://\\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","<sup>\\1</sup>",$Text); 
  	$Text=preg_replace("/\[sub\](.+?)\[\/sub\]/is","<sub>\\1</sub>",$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; 
}

function goback($num,$saying)
{
	echo"<table align=\"center\"><tr><td><a href=\"javascript:history.go(-1)\">$saying</a>";
}

////////////////////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>";
}
///////////////////////////以下是判断上传图片类型/////////////////////
function get_img ($file)
{
	$arr=getimagesize($file);
	$sina=$arr[2];
  	if($sina!=1&&$sina!=2&&$sina!=6)
     	{
		echo"上传图片的类型不允许";
     		exit;
     	}
	switch($sina)
	{
      		case"1":$ext="gif";break;
      		case"2":$ext="jpg";break;
      		case"6":$ext="bmp";break;
	}
	return $ext;
}
///////////////////////////求一数组和一值的交集///////////////////
function ArrSectString($array,$string)
{
   	$markarr=array($string);
   	$newarr=array_intersect($array,$markarr);
   	return $newarr;
}
////////////////////////求一数组和一值补集的交集//////////////////
function ArrDiffString($array,$string)
{
  	$markarr=array($string);
  	$newarr=array_diff($array,$markarr);
  	return $newarr;
}

//简单的字符串处理函数
function Encode($string)
{
  	$string=str_replace("\\","",$string);
  	$string=trim($string);
  	$string=stripslashes($string); 
  	$string=htmlspecialchars($string);
  	$string=str_replace("|","│",$string);
  	return $string;
}

function msubstr($str,$start,$len) 
{ 
	$strlen=$start+$len; 
	for($i=0;$i<$strlen;$i++) 
	{ 
    		if(ord(substr($str,$i,1))>0xa0) 
      		{ 
       			$tmpstr.=substr($str,$i,2); 
       			$i++; 
      		}   
   		else 
    		{
     			$tmpstr.=substr($str,$i,1); 
    		}
	} 
	return $tmpstr; 
}

function nsubstr($str,$start,$len) 
{ 
  	if($len>strlen($str))
	{
      		return $str;
   	}
   	else
	{
    		$nstr=msubstr($str,$start,"$len-3");
    		$nstr="$nstr"."...";
    		return $nstr;
  	}
}





function IsInt($string)
{
  	if(ereg("^[0-9]{0,}$",$string))
	{
  		return true;
  	}
   	else 
	{
  		return false;
  	}
}


//+-----------------对正则表达式中字符串进行转义------------------
//+-----------------暂定-----------
function RegEncode($string)
{
  	$string=trim($string);
  	$string=addslashes($string);
  	$string=ereg_replace("(\+|\*|\?|\||\[|\]|\.|\)|\)|\,|\-)","\\\\1",$string);
  	return $string;
}
?>