menu.php <html> <head> <meta charset="UTF-8"> </head> <h2>学生信息管理</h2> <a href="index.php">浏览学生</a> <a href="add.php">增加学生</a> <hr/> </html>
index.php <html> <head> <meta charset="UTF-8"> <title>学生信息管理</title> <script> function doDel(id) { if(confirm("确定要删除吗？")){ window.location = 'action.php?action=del&id='+id; } } </script> </head> <body> <center> <?php include("menu.php"); ?> <h3>浏览学生信息</h3> <table width = "600" border = "1" > <tr> <th>ID</th> <th>姓名</th> <th>年龄</th> <th>操作</th> </tr> <?php try{ #连接数据库 $pdo = new PDO("mysql:host=localhost;dbname=php","root","root"); }catch(PDOException $e){ die("数据库连接失败".$e->getMessage()); } #print_r($pdo); ##执行sql语句 $sql = "select * from test"; foreach($pdo->query($sql) as $row) { echo "<tr>"; echo "<td>{$row['id']}</td>"; echo "<td>{$row['name']}</td>"; echo "<td>{$row['age']}</td>"; echo "<td>{$row['sex']}</td>"; echo "<td> <a href='javascript:doDel({$row['id']})'>删除</a> <a href='edit.php?id={$row['id']}'>修改</a> </td>"; echo "</tr>"; } ?> </table> </center> </body> </html>
edit.php <!DOCTYPE html> <html> <head> <meta charset = "UTF-8"> <title>修改学生信息</title> </head> <body> <center> <?php include("menu.php"); #连接数据库 try{ $pdo = new PDO("mysql:host=localhost;dbname=php","root","root"); }catch(PDOException $e){ die("数据库连接失败".$e->getMessage()); } #拼成sql语句，查询信息 $sql = "select * from test where id = ".$_GET['id']; $stmt = $pdo->query($sql); #var_dump($stmt); if($stmt->rowCount() > 0) { $arr = $stmt->fetch(PDO::FETCH_ASSOC); # die("没有需要修改的数据"); # var_dump($arr); } else { die("没有需要修改的数据"); } ?> <form action="action.php?action=edit" method = "post"> <input type="hidden" name="id" value="<?php echo $arr['id']; ?>" /> <table> <tr> <td>姓名</td> <td><input type = "text" name = "name" value="<?php echo $arr['name'];?>" ></td> <td></td> </tr> <tr> <td>年龄</td> <td><input type = "text" name = "age" value= <?php echo $arr['age'];?>></td> </tr> <tr> <td>姓名</td> <td><input type = "radio" name = "sex" value = '男' <?php echo ($arr['sex']) == '男' ? "checked": "" ?> > 男 <input type = "radio" name = "sex" value = '女' <?php echo ($arr['sex']) == '女' ? "checked" : ""?>> 女</td> <td></td> </tr> <tr> <td> </td> <td><input type = "submit" value = "修改"/> <input type = "reset" value = "重置"/> </td> </tr> </table> </form> </center> </body> </html>
add.php <html> <head> <title>学生管理信息</title> </head> <body> <center> <?php include("menu.php"); ?> <h3>增加学生信息</h3> <form action="action.php?action=add" method = "post"> <table> <tr> <td>姓名</td> <td> <input type = "text" name="name" /></td> </tr> <tr> <td>年龄</td> <td> <input type = "text" name="age" /> </td> </tr> <tr> <td>性别</td> <td> <input type = "radio" name="sex" value = "男" /> 男 <input type = "radio" name="sex" value = "女" /> 女 </td> </tr> <tr> <td> </td> <td> <input type = "submit" value = "增加" /> <input type = "reset" value = "重置" /> </td> </tr> </table> </form> </center> </body> </html>
action.php <html> <head> <meta charset=“UTF-8"> </head> <body> <?php #1.连接数据库 try{ $pdo = new PDO("mysql:host=localhost;dbname=php","root","root"); }catch(PDOException $e){ die("数据库连接失败".$e->getMessage()); } #2.通过aaction的值判断相应的操作 switch($_GET['action']) { case 'add'://添加的操作 $name = $_POST['name']; $age = $_POST['age']; $sex = $_POST['sex']; $sql = "insert into test value(null,'{$name}','{$age}','{$sex}')"; $rw = $pdo->exec($sql); if($rw > 0) { echo "<script>alert('SUCCESS');window.location='index.php'</script>"; } else { echo "<script>alert('FAIL');window.history.back();</script>"; } break; case 'del': $id = $_GET['id']; $sql = "delete from test where id = {$id}"; $pdo->exec($sql); header("location:index.php"); break; case 'edit': $id = $_POST['id']; $name = $_POST['name']; $age = $_POST['age']; $sex = $_POST['sex']; $sql = "update test set name = '{$name}',age = {$age},sex = '{$sex}' where id = {$id}"; $res = $pdo->exec($sql); #echo $res; if($res > 0) { echo "<script>alert('SUCCESS');window.location='index.php'</script>"; } else { echo "<script>alert('FAIL');window.history.back();</script>"; } break; } ?> </body> </html>