PHP应用实例集锦-投票系统.doc

第1章 PHP概述国程序8-1文件名：config.inc.php 0)$action = 用户名已存在;exit;else$action = 用户名不存在;exit;?程序8-2文件名：inc_poll_result.php/统计某一投票主题总的投票数和每一投票选项的最大投票数?if (!$poll_subject)$query = select * from $table where user_name =$user_name;$result = mysql_query($query) or die(连接数据库错误);$array_row = mysql_fetch_array($result);$poll_subject = $array_rowpoll_subject;$poll_result = $array_rowpoll_result;$poll_radio = $array_rowpoll_radio;$array_poll_radio = explode(#,$poll_radio);$array_item =explode(#,$poll_result);$item_number = sizeof($array_item); /投票选项数 /空白区的高度$total_height = $top+($bar_width +$bar_distance) * $item_number + $bar_distance; $total_item = 0; $temp = 0; /定义弹出窗口的大小$td_height = 28; $open_window_height = ($total_height+40)+($item_number+8)*$td_height; $open_window_width = $total_width+50;/弹出窗口的宽for ($i = 0;$i $temp) $temp = (int)$array_item$i; /每一项的最大投票数 ?程序8-3文件名：show_poll.inc.php/本文件和文件frame_poll_result.php一起，实现由用户选取显示投票结果界面的功能function openWindow(url) popupWin = window.open(url, new_page, height=, width= , top=60, left=80, toolbar= no, menubar=no, scrollbars=yes, resizable=no,location=no, status=no)form method=POSTaction=投票 ?$title_char=48; /从0开始for ($i = 0 ;$i input type=radio value= name=radio    a href=javascript:openWindow() 投票结果 程序8-4文件名：frame_poll_result.php/定义显示投票结果的界面frameframesetrows=,*framespacing=0border=0 frameborder=0frame src=top_poll_result.php?user_name=/在此，可以定义自己喜欢的显示投票结果的界面。程序8-5文件名：index.php申请投票body font-family:宋体;color:3476AB;background-color:whitetd font-size= 12pta:link color =3476AB a:visted color =3476AB a:hover color = redform action= method=POST投票系统申请界面 申请人:/规定申请人的名字为18个字符       主页标题:  投票主题: 投票选项:   例: 好#很好#差#坏 程序8-6文件名：do_check.phpbody font-family:宋体;color:3476AB;background-color:whitetd font-size= 12pta:link color =3476AB a:visted color =3476AB a:hover color = red? include(config.inc.php); include(inc_poll_result.php);/输入检验function check_input($str_name,$str,$length) global $array_radio,$char_everyline,$beg_poll_result;global $poll_subject,$top_char_everyline; $str = ereg_replace( ,$str); $str=htmlspecialchars(trim($str);if ($str = ) echo 错误: 没有填完; exit; if (strlen($str) $length ) echo 错误: .$str_name.长度超出系统设置; exit; /对输入的申请人名字的正确性进行检验if ($str_name = 申请人)for ($i=0;$i strlen($str);$i+)$one_str = substr($str,$i,1); if (ord($one_str) 122 )echo 错误: 申请人,只接受英文和数字;exit;elseif(ord($one_str)90 and ord($one_str)97) echo 错误: 申请人,只接受英文和数字;exit;/对输入的投票选项和投票主题的正确性进行检验if ($str_name = 投票选项 or $str_name = 投票主题) $str=ereg_replace(chr(10),$str); $str=ereg_replace(chr(13),$str); if ($str_name = 投票选项) $array_radio = explode(#,$str); if (sizeof($array_radio) 8 or sizeof($array_radio) 2 ) echo 错误: .$str_name.应为28个字符; exit; $beg_poll_result = 0; for ($i = 0 ;$i sizeof($array_radio) ;$i+) if ($i sizeof($array_radio)-1 ) $beg_poll_result = $beg_poll_result.#0; if ($array_radio$i = ) echo 错误: .$str_name.中不能有空选项; exit; $temp=$array_radio$i; if (strlen($temp)$char_everyline) $array_radio$i = chunk_split($array_radio$i, $char_everyline,rn    ); if ($str_name = 投票主题 and strlen($str) $top_char_everyline) $str = chunk_split($str, $top_char_everyline,rn); $poll_subject = $str; /开始处理输入check_input(申请人,$user_name,8); check_input(主页标题,$homepage_subject,20); check_input(投票主题,$poll_subject,150); check_input(投票选项,$radio,1000); ? form method=POST action=input type=hidden name=beg_poll_result size=50value=input type=hidden name=user_name size=12 value=input type=hidden name=homepage_subject size=20 value=input type=hidden name=poll_subject size=29 value=input type=hidden name=poll_radio size=12 value= 程序8-7文件名：insert_data.phpbody font-family:宋体;color:3476AB;background-color:whitetd font-size= 12pttr height = 28a:link color =3476AB a:visted color =3476AB a:hover color = red?include(config.inc.php);isname_exist($user_name); /检验用户名是否存在/处理新用户申请，将数据保存到数据表if ($action = 用户名不存在) $insert_data_query=INSERT INTO $table(user_name,homepage_subject,poll_subject,poll_radio,poll_result) VALUES($user_name,$homepage_subject,$poll_subject,$poll_radio,$beg_poll_result); mysql_query($insert_data_query) OR die(加入数据时发生错误);$poll_result=$beg_poll_result;/*处理用户投票，如果是同一IP地址，则分析其选项；如果选择项相同，提示已投票，否则修改其投票，但投票总数不变。确定投票者IP地址的依据是：Web客户机在对服务器发送请求时需要提供一个标识，这个标识即IP地址就存储在环境变量REMOTE_ADDR里，因此通过这个环境变量就可以确定投票者的IP地址*/if($action = 用户名不存在)function deal_poll($user_name,$user_ip,$radio) global $table,$user_ip; if ($radio =) die(错误：没有选); $query = select * from $table where user_name =$user_name; $result = mysql_query($query) or die(连接数据库错误); $array_row = mysql_fetch_array($result); $ip = $array_rowip; $poll_result = $array_rowpoll_result; $poll_radio = $array_rowpoll_radio; $temp = $ip; $temp =ereg_replace($user_ip,$temp); $array_poll_radio = explode(#,$poll_radio); $str_poll_ok= 投票成功!你选择了 .chr($radio+65).: . $array_poll_radio$radio; if ( $temp != $ip and $temp !=) /同一IP地址 $array_ip = explode($user_ip,$ip); $temp_radio = substr($array_ip1,1,1); if ($temp_radio != $radio ) /选择项不同 $ip_str = $array_ip1; $length = strlen($ip_str)-2; $array_ip1=substr($ip_str,-$length); $str= $user_ip.#.$radio; $ip=$array_ip0.$str; $array_poll_result = explode(#,$poll_result); $temp1 = $array_poll_result(int)$radio; $temp1+=1; $temp2 = $array_poll_result(int)$temp_radio; $temp2-=1; $array_poll_result(int)$radio = $temp1; $array_poll_result(int)$temp_radio = $temp2; $poll_result = implode(#,$array_poll_result); $alter_data_query = UPDATE $table SET ip = $ip,poll_result = $poll_result WHERE user_name = $user_name; mysql_query($alter_data_query) OR die(加入数据时发生错误); echo $str_poll_ok; exit; else die(你已投票且选择相同); else /不同IP地址 $ip = $ip.$user_ip.#.$radio; $array_poll_result = explode(#,$poll_result); $temp = $array_poll_result(int)$radio; $temp+=1; $array_poll_result(int)$radio = $temp; $poll_result = implode(#,$array_poll_result); $alter_data_query = UPDATE $table SET ip = $ip ,poll_result = $poll_result WHERE user_name = $user_name; mysql_query($alter_data_query) OR die(加入数据时发生错误); echo $str_poll_ok;exit; $query = select * from $table where user_name = $user_name ;$result = mysql_query($query);$row = mysql_fetch_array($result);$ip = $rowip;$poll_result = $rowpoll_result; deal_poll($user_name,$user_ip,$radio);?程序8-8文件名：top_poll_result.p