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    ▪用PHP实现验证码功能       作者:hutuworm 来源:糊涂馋寺 目前,不少网站为了防止用户利用机器人自动注册、登录、灌水,都采用了 验证码技术。所谓验证码,就是将一串随机产生的数字或符号,生成一幅图片, .........
    ▪汉字转化为拼音(php版)       汉字转化为拼音(php版) 很多服务器对于中文文件名支持不是很好,有没有好的办法来解决呢???现在的解决方法一般是产生一个ID,将这个ID做文件名;网页上如.........
    ▪如何限制访问者的ip(PHPBB的代码)       如何限制访问者的ip(PHPBB的代码) Code:   <?php/**************************************************************************** admin_user_ban.php* -------------------* begin : Tuesda.........

[1]用PHP实现验证码功能
    来源: 互联网  发布时间: 2013-11-30

作者:hutuworm 来源:糊涂馋寺
目前,不少网站为了防止用户利用机器人自动注册、登录、灌水,都采用了
验证码技术。所谓验证码,就是将一串随机产生的数字或符号,生成一幅图片,
图片里加上一些干扰象素(防止OCR),由用户肉眼识别其中的验证码信息,输
入表单提交网站验证,验证成功后才能使用某项功能。

我们这里展示了如何编写PHP程序实现验证码功能:

代码一: 

    <?php
   /*
    *   Filename:    authpage.php
    *   Author:   hutuworm
    *   Date:   2003-04-28
    *   @Copyleft    hutuworm.org
    */

    srand((double)microtime()*1000000);

   //验证用户输入是否和验证码一致
        if(isset($HTTP_POST_VARS['authinput'])) 
        {
                if(strcmp($HTTP_POST_VARS['authnum'],$HTTP_POST_VARS['authinput'])==0)
                        echo "验证成功!";
                else
                        echo "验证失败!";
        }

   //生成新的四位整数验证码
        while(($authnum=rand()%10000)<1000); 
    ?>
        <form action=authpage.php method=post>
        <table>
                请输入验证码:<input type=text name=authinput ><br>
                <input type=submit name="验证" value="提交验证码">
                <input type=hidden name=authnum value=<? echo $authnum; ?>>
                <img src=/blog_article/authimg/authnum/lt;.html echo $authnum; ?>>
        </table>
        </form>

代码二:

<?php
   /*
    *   Filename:    authimg.php
    *   Author:   hutuworm
    *   Date:   2003-04-28
    *   @Copyleft    hutuworm.org
    */

   //生成验证码图片
        Header("Content-type: image/PNG"); 
        srand((double)microtime()*1000000);
        $im = imagecreate(58,28);
        $black = ImageColorAllocate($im, 0,0,0);
        $white = ImageColorAllocate($im, 255,255,255);
        $gray = ImageColorAllocate($im, 200,200,200);
        imagefill($im,68,30,$gray);

   //将四位整数验证码绘入图片
        imagestring($im, 5, 10, 8, $HTTP_GET_VARS['authnum'], $black);

        for($i=0;$i<50;$i++)   //加入干扰象素
        {
                imagesetpixel($im, rand()%70 , rand()%30 , $black);
        }

        ImagePNG($im);
        ImageDestroy($im);
?>

 

本文程序在Apache 2.0.45 + PHP 4.3.1环境下运行通过。

上文只是对验证码功能的一个简单实现,并没有考虑商用安全性问题。如果要增强安全性,将此功能投入商业应用,则可以通过以下几个步骤实现:

1. 启用Session。
2. authnum在authimg.php中生成,并计算md5sum,存入session。
3. authpage.php将authinput计算md5sum后,与session中的authnum(md5sum)对比得出验证结果。


本站注:作者使用了简单的代码实现了很酷的功能。不过在添加干扰像素时的效果不是太好,大家可以看一下雨声论坛登录时的效验码(http://ror.cn/perl/ut/user_login.cgi),偶把第二段代码稍改了一下,生成了与其类似的效果。

修改后的代码如下:

<?php
/*
 *   Filename: authimg.php
 *   Author:   hutuworm
 *   Date:     2003-04-28
 *   @Copyleft hutuworm.org
 */
//生成验证码图片
Header("Content-type: image/PNG"); 
srand((double)microtime()*1000000);
$im = imagecreate(62,20);
$black = ImageColorAllocate($im, 0,0,0);
$white = ImageColorAllocate($im, 255,255,255);
$gray = ImageColorAllocate($im, 200,200,200);
imagefill($im,68,30,$gray);
while(($authnum=rand()%100000)<10000);
//将四位整数验证码绘入图片
imagestring($im, 5, 10, 3, $authnum, $black);
for($i=0;$i<200;$i++)   //加入干扰象素
{
    $randcolor = ImageColorallocate($im,rand(0,255),rand(0,255),rand(0,255));
    imagesetpixel($im, rand()%70 , rand()%30 , $randcolor);
}
ImagePNG($im);
ImageDestroy($im);
?>

 

 


    
[2]汉字转化为拼音(php版)
    来源: 互联网  发布时间: 2013-11-30

汉字转化为拼音(php版) 很多服务器对于中文文件名支持不是很好,有没有好的办法来解决呢???现在的解决方法一般是产生一个ID,将这个ID做文件名;网页上如果url带汉字也经常出错;现在的解决方法一般用urlencode编码

现在用了这个转化,就好多了

原理:利用多维数组
1.添加索引
2.遍历数组

<?
$d=array(
array("a",-20319),
array("ai",-20317),
array("an",-20304),
array("ang",-20295),
array("ao",-20292),
array("ba",-20283),
array("bai",-20265),
array("ban",-20257),
array("bang",-20242),
array("bao",-20230),
array("bei",-20051),
array("ben",-20036),
array("beng",-20032),
array("bi",-20026),
array("bian",-20002),
array("biao",-19990),
array("bie",-19986),
array("bin",-19982),
array("bing",-19976),
array("bo",-19805),
array("bu",-19784),
array("ca",-19775),
array("cai",-19774),
array("can",-19763),
array("cang",-19756),
array("cao",-19751),
array("ce",-19746),
array("ceng",-19741),
array("cha",-19739),
array("chai",-19728),
array("chan",-19725),
array("chang",-19715),
array("chao",-19540),
array("che",-19531),
array("chen",-19525),
array("cheng",-19515),
array("chi",-19500),
array("chong",-19484),
array("chou",-19479),
array("chu",-19467),
array("chuai",-19289),
array("chuan",-19288),
array("chuang",-19281),
array("chui",-19275),
array("chun",-19270),
array("chuo",-19263),
array("ci",-19261),
array("cong",-19249),
array("cou",-19243),
array("cu",-19242),
array("cuan",-19238),
array("cui",-19235),
array("cun",-19227),
array("cuo",-19224),
array("da",-19218),
array("dai",-19212),
array("dan",-19038),
array("dang",-19023),
array("dao",-19018),
array("de",-19006),
array("deng",-19003),
array("di",-18996),
array("dian",-18977),
array("diao",-18961),
array("die",-18952),
array("ding",-18783),
array("diu",-18774),
array("dong",-18773),
array("dou",-18763),
array("du",-18756),
array("duan",-18741),
array("dui",-18735),
array("dun",-18731),
array("duo",-18722),
array("e",-18710),
array("en",-18697),
array("er",-18696),
array("fa",-18526),
array("fan",-18518),
array("fang",-18501),
array("fei",-18490),
array("fen",-18478),
array("feng",-18463),
array("fo",-18448),
array("fou",-18447),
array("fu",-18446),
array("ga",-18239),
array("gai",-18237),
array("gan",-18231),
array("gang",-18220),
array("gao",-18211),
array("ge",-18201),
array("gei",-18184),
array("gen",-18183),
array("geng",-18181),
array("gong",-18012),
array("gou",-17997),
array("gu",-17988),
array("gua",-17970),
array("guai",-17964),
array("guan",-17961),
array("guang",-17950),
array("gui",-17947),
array("gun",-17931),
array("guo",-17928),
array("ha",-17922),
array("hai",-17759),
array("han",-17752),
array("hang",-17733),
array("hao",-17730),
array("he",-17721),
array("hei",-17703),
array("hen",-17701),
array("heng",-17697),
array("hong",-17692),
array("hou",-17683),
array("hu",-17676),
array("hua",-17496),
array("huai",-17487),
array("huan",-17482),
array("huang",-17468),
array("hui",-17454),
array("hun",-17433),
array("huo",-17427),
array("ji",-17417),
array("jia",-17202),
array("jian",-17185),
array("jiang",-16983),
array("jiao",-16970),
array("jie",-16942),
array("jin",-16915),
array("jing",-16733),
array("jiong",-16708),
array("jiu",-16706),
array("ju",-16689),
array("juan",-16664),
array("jue",-16657),
array("jun",-16647),
array("ka",-16474),
array("kai",-16470),
array("kan",-16465),
array("kang",-16459),
array("kao",-16452),
array("ke",-16448),
array("ken",-16433),
array("keng",-16429),
array("kong",-16427),
array("kou",-16423),
array("ku",-16419),
array("kua",-16412),
array("kuai",-16407),
array("kuan",-16403),
array("kuang",-16401),
array("kui",-16393),
array("kun",-16220),
array("kuo",-16216),
array("la",-16212),
array("lai",-16205),
array("lan",-16202),
array("lang",-16187),
array("lao",-16180),
array("le",-16171),
array("lei",-16169),
array("leng",-16158),
array("li",-16155),
array("lia",-15959),
array("lian",-15958),
array("liang",-15944),
array("liao",-15933),
array("lie",-15920),
array("lin",-15915),
array("ling",-15903),
array("liu",-15889),
array("long",-15878),
array("lou",-15707),
array("lu",-15701),
array("lv",-15681),
array("luan",-15667),
array("lue",-15661),
array("lun",-15659),
array("luo",-15652),
array("ma",-15640),
array("mai",-15631),
array("man",-15625),
array("mang",-15454),
array("mao",-15448),
array("me",-15436),
array("mei",-15435),
array("men",-15419),
array("meng",-15416),
array("mi",-15408),
array("mian",-15394),
array("miao",-15385),
array("mie",-15377),
array("min",-15375),
array("ming",-15369),
array("miu",-15363),
array("mo",-15362),
array("mou",-15183),
array("mu",-15180),
array("na",-15165),
array("nai",-15158),
array("nan",-15153),
array("nang",-15150),
array("nao",-15149),
array("ne",-15144),
array("nei",-15143),
array("nen",-15141),
array("neng",-15140),
array("ni",-15139),
array("nian",-15128),
array("niang",-15121),
array("niao",-15119),
array("nie",-15117),
array("nin",-15110),
array("ning",-15109),
array("niu",-14941),
array("nong",-14937),
array("nu",-14933),
array("nv",-14930),
array("nuan",-14929),
array("nue",-14928),
array("nuo",-14926),
array("o",-14922),
array("ou",-14921),
array("pa",-14914),
array("pai",-14908),
array("pan",-14902),
array("pang",-14894),
array("pao",-14889),
array("pei",-14882),
array("pen",-14873),
array("peng",-14871),
array("pi",-14857),
array("pian",-14678),
array("piao",-14674),
array("pie",-14670),
array("pin",-14668),
array("ping",-14663),
array("po",-14654),
array("pu",-14645),
array("qi",-14630),
array("qia",-14594),
array("qian",-14429),
array("qiang",-14407),
array("qiao",-14399),
array("qie",-14384),
array("qin",-14379),
array("qing",-14368),
array("qiong",-14355),
array("qiu",-14353),
array("qu",-14345),
array("quan",-14170),
array("que",-14159),
array("qun",-14151),
array("ran",-14149),
array("rang",-14145),
array("rao",-14140),
array("re",-14137),
array("ren",-14135),
array("reng",-14125),
array("ri",-14123),
array("rong",-14122),
array("rou",-14112),
array("ru",-14109),
array("ruan",-14099),
array("rui",-14097),
array("run",-14094),
array("ruo",-14092),
array("sa",-14090),
array("sai",-14087),
array("san",-14083),
array("sang",-13917),
array("sao",-13914),
array("se",-13910),
array("sen",-13907),
array("seng",-13906),
array("sha",-13905),
array("shai",-13896),
array("shan",-13894),
array("shang",-13878),
array("shao",-13870),
array("she",-13859),
array("shen",-13847),
array("sheng",-13831),
array("shi",-13658),
array("shou",-13611),
array("shu",-13601),
array("shua",-13406),
array("shuai",-13404),
array("shuan",-13400),
array("shuang",-13398),
array("shui",-13395),
array("shun",-13391),
array("shuo",-13387),
array("si",-13383),
array("song",-13367),
array("sou",-13359),
array("su",-13356),
array("suan",-13343),
array("sui",-13340),
array("sun",-13329),
array("suo",-13326),
array("ta",-13318),
array("tai",-13147),
array("tan",-13138),
array("tang",-13120),
array("tao",-13107),
array("te",-13096),
array("teng",-13095),
array("ti",-13091),
array("tian",-13076),
array("tiao",-13068),
array("tie",-13063),
array("ting",-13060),
array("tong",-12888),
array("tou",-12875),
array("tu",-12871),
array("tuan",-12860),
array("tui",-12858),
array("tun",-12852),
array("tuo",-12849),
array("wa",-12838),
array("wai",-12831),
array("wan",-12829),
array("wang",-12812),
array("wei",-12802),
array("wen",-12607),
array("weng",-12597),
array("wo",-12594),
array("wu",-12585),
array("xi",-12556),
array("xia",-12359),
array("xian",-12346),
array("xiang",-12320),
array("xiao",-12300),
array("xie",-12120),
array("xin",-12099),
array("xing",-12089),
array("xiong",-12074),
array("xiu",-12067),
array("xu",-12058),
array("xuan",-12039),
array("xue",-11867),
array("xun",-11861),
array("ya",-11847),
array("yan",-11831),
array("yang",-11798),
array("yao",-11781),
array("ye",-11604),
array("yi",-11589),
array("yin",-11536),
array("ying",-11358),
array("yo",-11340),
array("yong",-11339),
array("you",-11324),
array("yu",-11303),
array("yuan",-11097),
array("yue",-11077),
array("yun",-11067),
array("za",-11055),
array("zai",-11052),
array("zan",-11045),
array("zang",-11041),
array("zao",-11038),
array("ze",-11024),
array("zei",-11020),
array("zen",-11019),
array("zeng",-11018),
array("zha",-11014),
array("zhai",-10838),
array("zhan",-10832),
array("zhang",-10815),
array("zhao",-10800),
array("zhe",-10790),
array("zhen",-10780),
array("zheng",-10764),
array("zhi",-10587),
array("zhong",-10544),
array("zhou",-10533),
array("zhu",-10519),
array("zhua",-10331),
array("zhuai",-10329),
array("zhuan",-10328),
array("zhuang",-10322),
array("zhui",-10315),
array("zhun",-10309),
array("zhuo",-10307),
array("zi",-10296),
array("zong",-10281),
array("zou",-10274),
array("zu",-10270),
array("zuan",-10262),
array("zui",-10260),
array("zun",-10256),
array("zuo",-10254)
);
function g($num){
global $d;
if($num>0&&$num<160){
return chr($num);
}
elseif($num<-20319
$num>-10247){
return "";
}else{
for($i=count($d)-1;$i>=0;$i--){if($d[$i][1]<=$num)break;}
return $d[$i][0];
}
}

function c($str){
$ret="";
for($i=0;$i<strlen($str);$i++){
$p=ord(substr($str,$i,1));
if($p>160){
$q=ord(substr($str,++$i,1));
$p=$p*256+$q-65536;
}
$ret.=g($p);
}
return $ret;
}

echo c($hz);
?>
<form method=post>
请在此处输入中文:<input name=hz>
</form>

    
[3]如何限制访问者的ip(PHPBB的代码)
    来源: 互联网  发布时间: 2013-11-30

如何限制访问者的ip(PHPBB的代码) Code:   <?php
/***************************************************************************
* admin_user_ban.php
* -------------------
* begin : Tuesday, Jul 31, 2001
* copyright : (C) 2001 The phpBB Group
* email : [email]support@phpbb.com[/email]
*
* $Id: admin_user_ban.php,v 1.21.2.2 2002/05/12 15:57:45 psotfx Exp $
*
*
***************************************************************************/

/***************************************************************************
* This file is part of the phpBB2 port to Nuke 6.0 (c) copyright 2002
* by Tom Nitzschner ([email]tom@toms-home.com[/email])
* [url]http://bbtonuke.sourceforge.net[/url] (or [url]http://www.toms-home.com)[/url]
*
* As always, make a backup before messing with anything. All code
* release by me is considered sample code only. It may be fully
* functual, but you use it at your own risk, if you break it,
* you get to fix it too. No waranty is given or implied.
*
* Please post all questions/request about this port on [url]http://bbtonuke.sourceforge.net[/url] first,
* then on my site. All original header code and copyright messages will be maintained
* to give credit where credit is due. If you modify this, the only requirement is
* that you also maintain all original copyright messages. All my work is released
* under the GNU GENERAL PUBLIC LICENSE. Please see the README for more information.
*
***************************************************************************/

/***************************************************************************
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
***************************************************************************/

define('IN_PHPBB', 1);

if ( !empty($setmodules) )
{
$filename = basename(__FILE__);
$module['Users']['Ban_Management'] = $filename;

return;
}

//
// Load default header
//
$phpbb_root_path = './../';
require($phpbb_root_path . 'extension.inc');
require('./pagestart.' . $phpEx);

//
// Start program
//
if ( isset($HTTP_POST_VARS['submit']) )
{
$user_bansql = '';
$email_bansql = '';
$ip_bansql = '';

$user_list = array();
if ( !empty($HTTP_POST_VARS['username']) )
{
$this_userdata = get_userdata($HTTP_POST_VARS['username']);
if( !$this_userdata )
{
message_die(GENERAL_MESSAGE, $lang['No_user_id_specified'] );
}

$user_list[] = $this_userdata['user_id'];
}

$ip_list = array();
if ( isset($HTTP_POST_VARS['ban_ip']) )
{
$ip_list_temp = explode(',', $HTTP_POST_VARS['ban_ip']);

for($i = 0; $i < count($ip_list_temp); $i++)
{
if ( preg_match('/^([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})[ ]*\-[ ]*([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})$/', trim($ip_list_temp[$i]), $ip_range_explode) )
{
//
// Don't ask about all this, just don't ask ... !为什么
//
$ip_1_counter = $ip_range_explode[1];
$ip_1_end = $ip_range_explode[5];

while ( $ip_1_counter <= $ip_1_end )
{
$ip_2_counter = ( $ip_1_counter == $ip_range_explode[1] ) ? $ip_range_explode[2] : 0;
$ip_2_end = ( $ip_1_counter < $ip_1_end ) ? 254 : $ip_range_explode[6];

if ( $ip_2_counter == 0 && $ip_2_end == 254 )
{
$ip_2_counter = 255;
$ip_2_fragment = 255;

$ip_list[] = encode_ip("$ip_1_counter.255.255.255");
}

while ( $ip_2_counter <= $ip_2_end )
{
$ip_3_counter = ( $ip_2_counter == $ip_range_explode[2] && $ip_1_counter == $ip_range_explode[1] ) ? $ip_range_explode[3] : 0;
$ip_3_end = ( $ip_2_counter < $ip_2_end
$ip_1_counter < $ip_1_end ) ? 254 : $ip_range_explode[7];

if ( $ip_3_counter == 0 && $ip_3_end == 254 )
{
$ip_3_counter = 255;
$ip_3_fragment = 255;

$ip_list[] = encode_ip("$ip_1_counter.$ip_2_counter.255.255");
}

while ( $ip_3_counter <= $ip_3_end )
{
$ip_4_counter = ( $ip_3_counter == $ip_range_explode[3] && $ip_2_counter == $ip_range_explode[2] && $ip_1_counter == $ip_range_explode[1] ) ? $ip_range_explode[4] : 0;
$ip_4_end = ( $ip_3_counter < $ip_3_end
$ip_2_counter < $ip_2_end ) ? 254 : $ip_range_explode[8];

if ( $ip_4_counter == 0 && $ip_4_end == 254 )
{
$ip_4_counter = 255;
$ip_4_fragment = 255;

$ip_list[] = encode_ip("$ip_1_counter.$ip_2_counter.$ip_3_counter.255");
}

while ( $ip_4_counter <= $ip_4_end )
{
$ip_list[] = encode_ip("$ip_1_counter.$ip_2_counter.$ip_3_counter.$ip_4_counter");
$ip_4_counter++;
}
$ip_3_counter++;
}
$ip_2_counter++;
}
$ip_1_counter++;
}
}
else if ( preg_match('/^([\w\-_]\.?){2,}$/is', trim($ip_list_temp[$i])) )
{
$ip = gethostbynamel(trim($ip_list_temp[$i]));

for($j = 0; $j < count($ip); $j++)
{
if ( !empty($ip[$j]) )
{
$ip_list[] = encode_ip($ip[$j]);
}
}
}
else if ( preg_match('/^([0-9]{1,3})\.([0-9\*]{1,3})\.([0-9\*]{1,3})\.([0-9\*]{1,3})$/', trim($ip_list_temp[$i])) )
{
$ip_list[] = encode_ip(str_replace('*', '255', trim($ip_list_temp[$i])));
}
}
}

$email_list = array();
if ( isset($HTTP_POST_VARS['ban_email']) )
{
$email_list_temp = explode(',', $HTTP_POST_VARS['ban_email']);

for($i = 0; $i < count($email_list_temp); $i++)
{
//
// This ereg match is based on one by [email]php@unreelpro.com[/email]
// contained in the annotated php manual at php.com (ereg
// section)
//
if ( eregi('^(([[:alnum:]\*]+([-_.][[:alnum:]\*]+)*\.?)|(\*))@([[:alnum:]]+([-_]?[[:alnum:]]+)*\.){1,3}([[:alnum:]]{2,6})$', trim($email_list_temp[$i])) )
{
$email_list[] = trim($email_list_temp[$i]);
}
}
}

$sql = "SELECT *
FROM " . BANLIST_TABLE;
if ( !($result = $db->sql_query($sql)) )
{
message_die(GENERAL_ERROR, "Couldn't obtain banlist information", "", __LINE__, __FILE__, $sql);
}

$current_banlist = $db->sql_fetchrowset($result);
$db->sql_freeresult($result);

$kill_session_sql = '';
for($i = 0; $i < count($user_list); $i++)
{
$in_banlist = false;
for($j = 0; $j < count($current_banlist); $j++)
{
if ( $user_list[$i] == $current_banlist[$j]['ban_userid'] )
{
$in_banlist = true;
}
}

if ( !$in_banlist )
{
$kill_session_sql .= ( ( $kill_session_sql != '' ) ? ' OR ' : '' ) . "session_user_id = " . $user_list[$i];

$sql = "INSERT INTO " . BANLIST_TABLE . " (ban_userid)
VALUES (" . $user_list[$i] . ")";
if ( !$db->sql_query($sql) )
{
message_die(GENERAL_ERROR, "Couldn't insert ban_userid info into database", "", __LINE__, __FILE__, $sql);
}
}
}

for($i = 0; $i < count($ip_list); $i++)
{
$in_banlist = false;
for($j = 0; $j < count($current_banlist); $j++)
{
if ( $ip_list[$i] == $current_banlist[$j]['ban_ip'] )
{
$in_banlist = true;
}
}

if ( !$in_banlist )
{
if ( preg_match('/(ff\.)|(\.ff)/is', chunk_split($ip_list[$i], 2, '.')) )
{
$kill_ip_sql = "session_ip LIKE '" . str_replace('.', '', preg_replace('/(ff\.)|(\.ff)/is', '%', chunk_split($ip_list[$i], 2, "."))) . "'";
}
else
{
$kill_ip_sql = "session_ip = '" . $ip_list[$i] . "'";
}

$kill_session_sql .= ( ( $kill_session_sql != '' ) ? ' OR ' : '' ) . $kill_ip_sql;

$sql = "INSERT INTO " . BANLIST_TABLE . " (ban_ip)
VALUES ('" . $ip_list[$i] . "')";
if ( !$db->sql_query($sql) )
{
message_die(GENERAL_ERROR, "Couldn't insert ban_ip info into database", "", __LINE__, __FILE__, $sql);
}
}
}

//
// Now we'll delete all entries from the session table with any of the banned
// user or IP info just entered into the ban table ... this will force a session
// initialisation resulting in an instant ban
//
if ( $kill_session_sql != '' )
{
$sql = "DELETE FROM " . SESSIONS_TABLE . "
WHERE $kill_session_sql";
if ( !$db->sql_query($sql) )
{
message_die(GENERAL_ERROR, "Couldn't delete banned sessions from database", "", __LINE__, __FILE__, $sql);
}
}

for($i = 0; $i < count($email_list); $i++)
{
$in_banlist = false;
for($j = 0; $j < count($current_banlist); $j++)
{
if ( $email_list[$i] == $current_banlist[$j]['ban_email'] )
{
$in_banlist = true;
}
}

if ( !$in_banlist )
{
$sql = "INSERT INTO " . BANLIST_TABLE . " (ban_email)
VALUES ('" . str_replace("'", "''", $email_list[$i]) . "')";
if ( !$db->sql_query($sql) )
{
message_die(GENERAL_ERROR, "Couldn't insert ban_email info into database", "", __LINE__, __FILE__, $sql);
}
}
}

$where_sql = '';

if ( isset($HTTP_POST_VARS['unban_user']) )
{
$user_list = $HTTP_POST_VARS['unban_user'];

for($i = 0; $i < count($user_list); $i++)
{
if ( $user_list[$i] != -1 )
{
$where_sql .= ( ( $where_sql != '' ) ? ', ' : '' ) . $user_list[$i];
}
}
}

if ( isset($HTTP_POST_VARS['unban_ip']) )
{
$ip_list = $HTTP_POST_VARS['unban_ip'];

for($i = 0; $i < count($ip_list); $i++)
{
if ( $ip_list[$i] != -1 )
{
$where_sql .= ( ( $where_sql != '' ) ? ', ' : '' ) . $ip_list[$i];
}
}
}

if ( isset($HTTP_POST_VARS['unban_email']) )
{
$email_list = $HTTP_POST_VARS['unban_email'];

for($i = 0; $i < count($email_list); $i++)
{
if ( $email_list[$i] != -1 )
{
$where_sql .= ( ( $where_sql != '' ) ? ', ' : '' ) . $email_list[$i];
}
}
}

if ( $where_sql != '' )
{
$sql = "DELETE FROM " . BANLIST_TABLE . "
WHERE ban_id IN ($where_sql)";
if ( !$db->sql_query($sql) )
{
message_die(GENERAL_ERROR, "Couldn't delete ban info from database", "", __LINE__, __FILE__, $sql);
}
}

$message = $lang['Ban_update_sucessful'] . '<br /><br />' . sprintf($lang['Click_return_banadmin'], '<a href="' . append_sid("admin_user_ban.$phpEx") . '">', '</a>') . '<br /><br />' . sprintf($lang['Click_return_admin_index'], '<a href="' . append_sid("index.$phpEx?pane=right") . '">', '</a>');

message_die(GENERAL_MESSAGE, $message);

}
else
{
$template->set_filenames(array(
'body' => 'admin/user_ban_body.tpl')
);

$template->assign_vars(array(
'L_BAN_TITLE' => $lang['Ban_control'],
'L_BAN_EXPLAIN' => $lang['Ban_explain'],
'L_BAN_EXPLAIN_WARN' => $lang['Ban_explain_warn'],
'L_IP_OR_HOSTNAME' => $lang['IP_hostname'],
'L_EMAIL_ADDRESS' => $lang['Email_address'],
'L_SUBMIT' => $lang['Submit'],
'L_RESET' => $lang['Reset'],

'S_BANLIST_ACTION' => append_sid("admin_user_ban.$phpEx"))
);

$template->assign_vars(array(
'L_BAN_USER' => $lang['Ban_username'],
'L_BAN_USER_EXPLAIN' => $lang['Ban_username_explain'],
'L_BAN_IP' => $lang['Ban_IP'],
'L_BAN_IP_EXPLAIN' => $lang['Ban_IP_explain'],
'L_BAN_EMAIL' => $lang['Ban_email'],
'L_BAN_EMAIL_EXPLAIN' => $lang['Ban_email_explain'])
);

$userban_count = 0;
$ipban_count = 0;
$emailban_count = 0;

$sql = "SELECT b.ban_id, u.user_id, u.username
FROM " . BANLIST_TABLE . " b, " . USERS_TABLE . " u
WHERE u.user_id = b.ban_userid
AND b.ban_userid <> 0
AND u.user_id <> " . ANONYMOUS . "
ORDER BY u.user_id ASC";
if ( !($result = $db->sql_query($sql)) )
{
message_die(GENERAL_ERROR, 'Could not select current user_id ban list', '', __LINE__, __FILE__, $sql);
}

$user_list = $db->sql_fetchrowset($result);
$db->sql_freeresult($result);

$select_userlist = '';
for($i = 0; $i < count($user_list); $i++)
{
$select_userlist .= '<option value="' . $user_list[$i]['ban_id'] . '">' . $user_list[$i]['username'] . '</option>';
$userban_count++;
}

if( $select_userlist == '' )
{
$select_userlist = '<option value="-1">' . $lang['No_banned_users'] . '</option>';
}

$select_userlist = '<select name="unban_user[]" multiple="multiple" size="5">' . $select_userlist . '</select>';

$sql = "SELECT ban_id, ban_ip, ban_email
FROM " . BANLIST_TABLE;
if ( !($result = $db->sql_query($sql)) )
{
message_die(GENERAL_ERROR, 'Could not select current ip ban list', '', __LINE__, __FILE__, $sql);
}

$banlist = $db->sql_fetchrowset($result);
$db->sql_freeresult($result);

$select_iplist = '';
$select_emaillist = '';

for($i = 0; $i < count($banlist); $i++)
{
$ban_id = $banlist[$i]['ban_id'];

if ( !empty($banlist[$i]['ban_ip']) )
{
$ban_ip = str_replace('255', '*', decode_ip($banlist[$i]['ban_ip']));
$select_iplist .= '<option value="' . $ban_id . '">' . $ban_ip . '</option>';
$ipban_count++;
}
else if ( !empty($banlist[$i]['ban_email']) )
{
$ban_email = $banlist[$i]['ban_email'];
$select_emaillist .= '<option value="' . $ban_id . '">' . $ban_email . '</option>';
$emailban_count++;
}
}

if ( $select_iplist == '' )
{
$select_iplist = '<option value="-1">' . $lang['No_banned_ip'] . '</option>';
}

if ( $select_emaillist == '' )
{
$select_emaillist = '<option value="-1">' . $lang['No_banned_email'] . '</option>';
}

$select_iplist = '<select name="unban_ip[]" multiple="multiple" size="5">' . $select_iplist . '</select>';
$select_emaillist = '<select name="unban_email[]" multiple="multiple" size="5">' . $select_emaillist . '</select>';

$template->assign_vars(array(
'L_UNBAN_USER' => $lang['Unban_username'],
'L_UNBAN_USER_EXPLAIN' => $lang['Unban_username_explain'],
'L_UNBAN_IP' => $lang['Unban_IP'],
'L_UNBAN_IP_EXPLAIN' => $lang['Unban_IP_explain'],
'L_UNBAN_EMAIL' => $lang['Unban_email'],
'L_UNBAN_EMAIL_EXPLAIN' => $lang['Unban_email_explain'],
'L_USERNAME' => $lang['Username'],
'L_LOOK_UP' => $lang['Look_up_User'],
'L_FIND_USERNAME' => $lang['Find_username'],

'U_SEARCH_USER' => append_sid("search.$phpEx?mode=searchuser&popup=1&menu=1"),
'S_UNBAN_USERLIST_SELECT' => $select_userlist,
'S_UNBAN_IPLIST_SELECT' => $select_iplist,
'S_UNBAN_EMAILLIST_SELECT' => $select_emaillist,
'S_BAN_ACTION' => append_sid("admin_user_ban.$phpEx"))
);
}

$template->pparse('body');

include('./page_footer_admin.'.$phpEx);

?>

    
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