Heim >Backend-Entwicklung >PHP-Tutorial >Beispielcode-Analyse der PHP-Implementierung des Abstimmungssystems
Abstimmungskategorie
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <?php$db= new Mysqli("localhost","root","root","db_0808");$sql= "select * from fenlei";$result=$db->query($sql);$data_c= $result->fetch_all();?> <table border="1"> <?php foreach ($data_c as $i){ echo" <tr><th><a href='vote.php?id={$i[0]}&is_radio={$i[2]}'>{$i[1]}</a></th></tr>"; }?> </table> </body> </html>
Abstimmungsschnittstelle
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <?php$id=$_GET['id'];$is_radio=$_GET['is_radio'];$db= new Mysqli("localhost","root","root","db_0808");$sql= "select * from toupiao WHERE category_id='{$id}'";$result=$db->query($sql);$data=$result->fetch_all();?> <form action="tongji.php" method="post"> <table> <tr> <td>名字</td> <td>投票</td> </tr> <?php if ($is_radio==1){ foreach ($data as $i){ echo "<tr> <td>{$i[1]}</td> <td><input type='radio' name='r' value='{$i[0]}'></td> </tr>"; } }else{ foreach ($data as $i){ echo "<tr> <td>{$i[1]}</td> <td><input type='checkbox' name='r[]' value='{$i[0]}'></td> </tr>"; } } ?> </table> <input type="submit" value="提交"> </form> </body> </html>
Abstimmungsverarbeitung
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Title</title> </head> <body> <table> <tr> <td>名字</td> <td>票数</td> </tr> <?php//$db= new Mysqli("localhost","root","root","db_0808");require_once "../ZY/YIN.class.php";$db = new YIN();$ip=$_SERVER['REMOTE_ADDR'];//获取ip$sql="select count(*) from table2 where ip='{$ip}'";$data = $db->StrQuery($sql);if($data!='0'){ echo "每个人一天只能投一次";$r=$_POST['r']; if (is_array($r)){ $s=implode(',',$r); $sq="select * from toupiao where id in ({$s})"; }else{ $sq="select * from toupiao where id = {$r}"; } $qurle=$db->Query($sq); foreach ($qurle as $i){ echo "<tr><td>{$i[1]}</td><td>{$i[2]}</td></tr>"; } }else{ $sql = "INSERT INTO table2 VALUES (null,'{$ip}',DEFAULT)"; $squel=$db->strQuery($sql,0); if($squel){// $upsql=update table_name set votes = votes + 1 where ... //然后把数据insert into 到table2中$r=$_POST['r'];if (is_array($r)){ $s=implode(',',$r); $sql="update toupiao set count=(count+1) where id in ({$s})"; }else{$sql="update toupiao set count=(count+1) where id = {$r}"; }$data=$db->query($sql,0);if ($data){//echo "success"; if (is_array($r)){ $s=implode(',',$r); $sq="select * from toupiao where id in ({$s})"; }else{ $sq="select * from toupiao where id = {$r}"; } $qurle=$db->Query($sq); foreach ($qurle as $i){ echo "<tr><td>{$i[1]}</td><td>{$i[2]}</td></tr>"; } } } }?> </table> </body> </html>
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