收藏
PHPz批改状态：合格
老师批语：
<?php// printf('<pre>%s</pre>',print_r($_FILES,true));// 1. 实例演示单文件上传与多文件上传// 单文件if(isset($_FILES['myfile'])){extract($_FILES['myfile']);if($error===0){$ext = pathinfo($name)['extension'];$dest = 'uploads/'. md5($name) . '.' . $ext;if(move_uploaded_file($tmp_name,$dest)){echo '<span style="color:green">上传成功</span><br>';echo "<img src=$dest width='200'>";}}}?><!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>单文件上传</title></head><body><form action="" method="post" enctype="multipart/form-data"><fieldset><legend>单文件上传</legend><input type="file" name="myfile"><button>上传</button></fieldset></form></body></html>
<?php//printf('<pre>%s</pre>',print_r($_FILES,true));// 多文件上传if(isset($_FILES['myfile'])){foreach($_FILES['myfile']['error'] as $key=>$error){if($error===0){$name = $_FILES['myfile']['name'][$key];$tmpName = $_FILES['myfile']['tmp_name'][$key];$desc = 'uploads/'. md5($name).'.'. pathinfo($name)['extension'];move_uploaded_file($tmpName,$desc);echo '<span style="color:green">上传成功</span><br>';echo "<img src=$desc width='200'><br>";}}}?><!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>多文件上传</title></head><body><form action="" method="post" enctype="multipart/form-data"><fieldset><legend>多文件上传</legend><input type="file" name="myfile[]" multiple><button>上传</button></fieldset></form></body></html>
<?php$p = $_GET['p']??1;// 2. 实例演示简单分页操作,并理解分页所需参数的意思$db = new PDO('mysql:dbname=phpedu','root','root');// 数据表总数量:Total$sql = 'SELECT COUNT(*) AS `total` FROM `staff`';$stmt = $db->prepare($sql);$stmt->execute();$stmt->bindColumn('total', $total);$stmt->fetch(PDO::FETCH_ASSOC);// 单页显示数量:num=5$num = 5;// 分页数量$pages = ceil($total/$num);// 计算偏移量$offset = ($p-1)*$num;$sql = "SELECT * FROM `staff` LIMIT $num OFFSET $offset";$stmt = $db->prepare($sql);$stmt->execute();$staffs = $stmt->fetchAll(PDO::FETCH_ASSOC);?><!DOCTYPE html><html lang="en"><head><meta charset="UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=edge"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>分页操作</title><style>table {width: 400px;border-collapse: collapse;text-align: center;}table th,table td {border: 1px solid;padding: 5px;}table thead {background-color: lightcyan;}table caption {font-size: larger;margin-bottom: 8px;}p>a {text-decoration: none;color: #555;border: 1px solid;padding: 5px 10px;margin: 10px 2px;}.active {background-color: seagreen;color: white;border: 1px solid seagreen;}</style></head><body><table><caption>员工信息表</caption><thead><tr><th>ID</th><th>姓名</th><th>性别</th><th>邮箱</th></tr></thead><tbody><?php foreach ($staffs as $staff) : extract($staff) ?><tr><td><?= $id ?></td><td><?= $name ?></td><td><?= $gender ?></td><td><?= $email ?></td></tr><?php endforeach ?></tbody></table><p><?php for ($i = 1; $i <= $pages; $i++) : ?><?php$url = $_SERVER['PHP_SELF'] . '?p=' . $i;$active = $i == $_GET['p'] ? 'active' : null;?><a href="<?= $url ?>" class="<?= $active ?>"><?= $i ?></a><?php endfor ?></p></body></html>
Copyright 2014-2025 https://www.php.cn/ All Rights Reserved | php.cn | 湘ICP备2023035733号
