php课程---练习（联系人信息表）
做一个联系人表，实现增删改功能
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>主页面</title> </head> <body> <?php $db =new mysqli("localhost","root","","Mycontacts"); if(mysqli_connect_error()) { echo "连接失败"; } else { $sql = "select * from contacts"; $result = $db->query($sql); echo "<table width=100% cellpadding='0' cellspacing='0' border='1'>"; echo "<tr><td> </td><td>姓名</td><td>电话</td><td>分组</td>"; while($row=$result->fetch_row()) { $fenzu=GroupsName($db,$row[3]); echo "<tr><td><a href='Lshanchu.php?id=".$row[0]."' onclick=\"return confirm('确定删除吗')\">删除</a> <a href='bianji.php?id=".$row[0]."'>编辑</a></td><td>{$row[1]}</td><td>{$row[2]}</td><td>{$fenzu}</td>"; } } echo "</table>"; //根据代号查询分组名称 function GroupsName($db,$id) { //写sql语句 $sql = "select * from groups where id='{$id}'"; //执行sql语句 $result = $db->query($sql); //处理数据 if($row=$result->fetch_row()) { return $row[1]; } else { return ""; } } ?> <form action="tianjia.php" method="post"> <input type="submit" value="添加新号码" onclick="window.open('tianjia.php')"/> </form> </body> </html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>添加</title> </head> <body> <?php $db =new mysqli("localhost","root","","Mycontacts"); if(mysqli_connect_error()) { echo "连接失败"; } else { $sql = "select * from contacts"; $result = $db->query($sql); echo "<table width=100% cellpadding='0' cellspacing='0' border='1'>"; echo "<tr><td> </td><td>姓名</td><td>电话</td><td>分组</td>"; while($row=$result->fetch_row()) { $fenzu=GroupsName($db,$row[3]); echo "<tr><td><a href='Lshanchu.php?id=".$row[0]."' onclick=\"return confirm('确定删除吗')\">删除</a> <a href='bianji.php?id=".$row[0]."'>编辑</a></td><td>{$row[1]}</td><td>{$row[2]}</td><td>{$fenzu}</td>"; } } echo "</table>"; function GroupsName($db,$id) { //写sql语句 $sql = "select * from groups where id='{$id}'"; //执行sql语句 $result = $db->query($sql); //处理数据 if($row=$result->fetch_row()) { return $row[1]; } else { return ""; } } ?> <form action="TJchuli.php" method="post"> <div><span>姓名:</span><input type="text" name="name" /></div> <div><span>电话:</span><input type="text" name="tel" /></div> <div><span style="width:90px;">分组:</span> <select name="groupid"> <?php $db=new mysqli("localhost","root","","Mycontacts"); if(mysqli_connect_error()) { echo "连接失败"; } else { $sql = "select * from groups"; $result = $db->query($sql); while($row=$result->fetch_row()) { echo "<option value='{$row[0]}'>{$row[1]}</option>"; } } ?> </select> </div> <div><input type="submit" value="添加" /><a href="LianXiren.php">返回</a></div> </form> </body> </html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>添加处理</title> </head> <body> <?php $id = $_POST["id"]; $name = $_POST["name"]; $tel = $_POST["tel"]; $groups = $_POST["groupid"]; $db=new mysqli("localhost","root","","Mycontacts"); if(mysqli_connect_error()) { echo "连接失败"; } else { $sql = "insert into contacts values('{$id}','{$name}',{$tel},'{$groups}')"; $result = $db->query($sql); if($result) { header("Location:tianjia.php"); } else { echo "添加失败"; } } ?> </body> </html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>删除</title> </head> <body> <?php $id = $_GET["id"]; //1.造连接对象 $db=new mysqli("localhost","root","","Mycontacts"); //2.判断是否连接成功 if(mysqli_connect_error()) { echo "连接失败"; exit; //退出整个程序 } else { //3.写sql语句 $sql = "delete from contacts where id='".$id."'"; //4. 执行sql语句 $result = $db->query($sql); //判断是否删除成功 if($result) { header("Location:LianXiren.php"); } else { echo "删除失败!"; } } ?> </body> </html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>编辑</title> </head> <body> <?php $id = $_GET["id"]; //1.造连接对象 $db=new mysqli("localhost","root","","Mycontacts"); //2.判断是否连接成功 if(mysqli_connect_error()) { echo "连接失败"; exit; //退出整个程序 } else { //3.写sql语句 $sql = "select * from contacts where id='".$id."'"; //4. 执行sql语句 $result = $db->query($sql); //5.处理数据 //遍历每一条数据 $row=$result->fetch_row(); } ?> <form action="bianjichuli.php" method="post"> <div style="text-align:center">编辑联系人信息</div> <div style="visibility:hidden"><span>id：</span><input type="text" name="id" value="<?php echo $row[0] ?>" /></div> <div><span>姓名:</span><input type="text" name="name" value="<?php echo $row[1] ?>" /></div> <div><span>电话:</span><input type="text" name="tel" value="<?php echo $row[2] ?>" /></div> <div><span style="width:90px;">分组:</span> <select name="groupid"> <?php $db=new mysqli("localhost","root","","Mycontacts"); if(mysqli_connect_error()) { echo "连接失败"; } else { $sql = "select * from groups"; $result = $db->query($sql); while($row=$result->fetch_row()) { echo "<option value='{$row[0]}'>{$row[1]}</option>"; } } ?> </select> </div> <div><input type="submit" value="修改" /></div> </form> </body> </html>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>编辑处理</title> </head> <body> <?php $id = $_POST["id"]; $name = $_POST["name"]; $tel = $_POST["tel"]; $groups = $_POST["groupid"]; $db=new mysqli("localhost","root","","Mycontacts"); if(mysqli_connect_error()) { echo "连接失败"; } else { $sql="update contacts set name='".$name."',tel='".$tel."',groupid='".$groups."' where id='".$id."'"; $result=$db->query($sql); if($result) { header("Location:tianjia.php"); } else { echo "修改失败"; } } ?> </body> </html>
实现效果如下图：
