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📄 fun.php

📁 聊天程序
💻 PHP
字号:
🔍 
<?php

////////////////////////////////////////////////////////////////////////////////////////////////////////

function display_head()
{
$chatroom_name=db("get","files/system.php",1,"chatroom_name",2);
?>
<html><head><title><?echo$chatroom_name;?></title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<link rel="stylesheet" href="index.files/css.css" type="text/css"></head>
<body bgcolor="#ffffff"><center>
<table width=296 height=417 border=0 cellspacing=0 cellpadding=0>
<tr><td colspan=3 height=259><img src="index.files/login_r2_c2.gif" border=0 width=296 height=259></td></tr>
<tr><td width=10 height=147><img src="index.files/login_r3_c2.gif" border=0 width=10 height=147></td>
<td width=277 height=147 align=center valign=middle>
<?
}

function display_foot()
{
?>
</td><td width=9 height=147><img src="index.files/login_r3_c4.gif" border=0 width=9 height=147></td></tr>
<tr><td colspan=3 height=11><img src="index.files/login_r4_c2.gif" border=0 width=296 height=11></td></tr>
</table>
</table></center></body></html>
<?
}

function message($content,$mode="",$url="")
{
if($mode=="")
	{
	echo $content;
	}
if($mode=="error")	
	{
	echo $content."&nbsp;<a href=\"javascript:history.go(-1)\">[ 返回 ]</a>";
	}
if($mode=="return" && $url!="")
	{
	echo "<head><meta http-equiv=\"refresh\" content=\"2;URL=".$url."\"></head>\n";
	echo "".$content." （<a href=".$url.">两秒钟将自动刷新</a>）";
	}
}

function limitstr($str,$limitlen)
{
$len=strlen($str);
if($len>=$limitlen)
	{
	$str=substr($str,0,$limitlen-2);
	$str.=" ..";
	return $str;
	}
else
	return $str;
}

function writeF($filename,$contents,$mode)
{
$file=@fopen($filename,$mode);
@flock($file,3);
@fwrite($file,$contents);
@fclose($file);
}

function replace($filename,$rownum,$newrow)
{
$row=file($filename);
$all="";
for($i=0;$i<$rownum;$i++)
	$all.=chop($row[$i])."\n";
$all.=$newrow;
for($i=$rownum+1;$i<count($row);$i++)
	$all.=chop($row[$i])."\n";
writeF($filename,$all,"w");
}

function getnum($filename)
{
$row=file($filename);
return chop($row[0]);
}

function delrow($filename,$rownum)
{
$row=file($filename);
$all="";
for($i=0;$i<$rownum;$i++)
	$all.=chop($row[$i])."\n";
for($i=$rownum+1;$i<count($row);$i++)
	$all.=chop($row[$i])."\n";
writeF($filename,$all,"w");
}

function safe($msg)
{
$msg=str_replace("|", "&#124;", $msg); 
$msg=str_replace("&", "&amp;", $msg);
$msg=str_replace(">", "&gt;", $msg);
$msg=str_replace("<", "&lt;", $msg);
$msg=str_replace("'", "&#039;", $msg); 
$msg=str_replace("\"", "&quot;", $msg);
$msg=str_replace("[br]", "<br>", $msg);
return $msg;
}

function check_name_pass($str)
{
if(eregi("[|'\"]",$str))
	return "no";
else 
	return "yes";
}

function db($method,$filename,$tag_col,$tag,$target_col,$target="")
{
$row=file($filename);
for($i=1;$i<count($row);$i++)
	{
	$sub=explode("|",$row[$i]);
	if($tag==$sub[$tag_col])
		{
		//操作接口
		if($method=="get")
			return $sub[$target_col];
		if($method=="getline")
			return $row[$i];
		if($method=="put")
			{
			$all="";
			$newrow="";
			for($j=0;$j<$target_col;$j++)
				$newrow.=$sub[$j]."|";
			$newrow.=$target."|";
			for($j=$target_col+1;$j<count($sub);$j++)
				{
				if($j==(count($sub)-1))  $newrow.=chop($sub[$j])."\n";
				else  $newrow.=$sub[$j]."|";
				}
			for($j=0;$j<$i;$j++)
				$all.=chop($row[$j])."\n";
			$all.=$newrow;
			for($j=$i+1;$j<count($row);$j++)
				$all.=chop($row[$j])."\n";
			writeF($filename,$all,"w+");
			return true;
			}
		}
	}
return false;
}

////////////////////////////////////////////////////////////////////////////////////////////////////////

function login($username,$userpass,$longin_method)
{
if(chop($longin_method)=="")  $longin_method="local";
$username=safe($username);
$userpass=safe($userpass);
if(chop($username)=="" || chop($userpass)=="")
	{
	display_head();
	display_login();
	message("<font color=red>用户名和密码不能为空</font>","","");
	display_foot();
	exit;
	}
$row=file("files/userdata.php");
for($i=1;$i<count($row);$i++)
	{
	$sub=explode("|",$row[$i]);
	if($username==$sub[1])
		{
		$user_found="yes";
		if( ($longin_method=="local" && $userpass==$sub[2]) || ($longin_method=="remote" && $userpass==md5($sub[2]) ) )
			{
			setcookie("username",$username,time()+864000);
			setcookie("logined","yes",time()+864000);
			display_head();
			message("正在登陆聊天室！","return","index.php");
			display_foot();
			exit;
			}
		else
			{
			display_head();
			display_login();
			message("<font color=red>用户密码错误！请检查密码输入</font>");
			display_foot();
			exit;
			}
		break;
		}
	}
if($user_found!="yes")
	{
	$newuser="|".$username."|".$userpass."||\n";
	writeF("files/userdata.php",$newuser,"a+");
	setcookie("username",$username,time()+864000);
	setcookie("logined","yes",time()+864000);
	display_head();
	message("正在登陆聊天室！","return","index.php");
	display_foot();
	exit;
	}
}

function checklogin()
{
global $username;
global $logined;
if($logined=="yes" && $username!="")
	return "yes";
if($logined=="no" || $logined=="" || $username=="")
	return "no";
}

function display_login()
{
if(checklogin()=="yes")
	{
	message("<font color=red>您已经登陆了！</font>");
	exit;
	}
?>
<form name="login" method="post" action="index.php?action=login">
<table width=250 border=0 cellspacing=0 cellpadding=0>
<tr><td width=80 height=30>用户名称</td>
<td width=170 height=30 align=left>
<input size=10 type="text" name=user class="input" onMouseOver ="this.style.backgroundColor='#F0F1FF'" onMouseOut ="this.style.backgroundColor=''"></td></tr>
<tr><td width=80 height=30 align=left>用户密码</td>
<td width=170 height=30>
<input size=10 type="password" name=pass class="input" onMouseOver ="this.style.backgroundColor='#F0F1FF'" onMouseOut ="this.style.backgroundColor=''">
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<input type="submit" name="Submit" value="登陆" class="button" onMouseOver ="this.style.backgroundColor='#EEF7FF'" onMouseOut ="this.style.backgroundColor=''"></td></tr>
<tr><td colspan=2> <font color=#666666>游客可直接登陆，系统将自动注册！</font> </td></tr>
</table></form>
<?
}

?>

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