Correction status:Uncorrected
Teacher's comments:
<!doctype html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0"> <meta http-equiv="X-UA-Compatible" content="ie=edge"> <title>上下页、首页、尾页</title> <style type="text/css"> table,th,td { border:1px solid black; } table th{ background-color:gray; } table { border-collapse:collapse; width:70%; margin:30px auto; text-align: center; } div { text-align: center; } div a { text-decoration: none; margin-left:10px; } div a:hover, .active { background-color: gray; color:white; } form { display: inline; } </style> </head> <body> <?php $db = mysqli_connect('127.0.0.1','root','root'); mysqli_select_db($db,'php'); $num = 5; $page = isset($_GET['p']) ? $_GET['p'] : 1; $offset = ($page -1) * $num; $sql = "SELECT * FROM staff LIMIT {$offset},{$num}"; $res = mysqli_query($db,$sql); $rows = mysqli_fetch_all($res,MYSQLI_ASSOC); $number = mysqli_query($db,"SELECT COUNT(*) FROM staff"); list($total) = mysqli_fetch_row($number); $pages = ceil($total / $num); ?> <table> <caption><h2>员工信息表</h2></caption> <tr> <th>ID</th> <th>姓名</th> <th>性别</th> <th>年龄</th> <th>工资</th> </tr> <?php foreach ($rows as $row): ?> <tr> <td><?php echo $row['staff_id'] ?></td> <td><?php echo $row['name'] ?></td> <td><?php echo $row['sex'] ?></td> <td><?php echo $row['age'] ?></td> <td><?php echo $row['salary'] ?></td> </tr> <?php endforeach;?> </table> <div> <?php if($page !=1): ?> <a href="http://127.0.0.1/front/0427/demo4.php?p=1">首页</a> <a href="http://127.0.0.1/front/0427/demo4.php?p= <?php echo (($page-1)==0) ? 1: ($page-1); ?> ">上一页</a><?php endif; ?> <?php for($i=1; $i<=$pages; $i++): ?> <a class="<?php if($page == $i) echo 'active'; ?>" href="http://127.0.0.1/front/0427/demo4.php?p=<?php echo $i; ?>"><?php echo $i; ?></a> <?php endfor?> <?php if($page !=$pages): ?> <a href="http://127.0.0.1/front/0427/demo4.php?p= <?php echo (($page+1)>$pages) ? $pages : ($page+1); ?> ">下一页</a> <a href="http://127.0.0.1/front/0427/demo4.php?p=<?php echo $pages ?>">尾页</a> <?php endif; ?> <form action="" method="get"> 第 <select name="p" id=""> <?php for($i=1; $i<=$pages; $i++): ?> <option value="<?php echo $i; ?>" <?php if($page == $i) echo 'selected' ?>><?php echo $i; ?></option> <?php endfor ?> </select> 页 <button>提交</button> </form> </div> </body> </html>
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