PHP 页面中实现数据的增删改查

main页面(主页面)

php
$db = new MySQLi("localhost","root","","mydb");
!mysqli_connect_error() or die("连接失败");
$sql = "select * from Info";
$result = $db->query($sql);
$attr = $result->fetch_all();
foreach($attras$v)
{
    $sex = $v[2]? '男':'女';
    $sqln = "select Name from Nation where Code ='$v[3]'";
    $rnation = $db ->query($sqln);
    $attrn = $rnation->fetch_assoc();
    echo "";
}
?>



代号
姓名
性别
民族
生日
操作


  

    
{$v[0]}
    
{$v[1]}
    
{$sex}
    
{$attrn['Name']}
    
{$v[4]}
    

       删除
       修改
    
    
添加数据

Add(添加数据页面)

 1 
添加数据
 2 

 3     
代号：
 4     
姓名：
 5     
性别：
 6          男
 7          女
 8     
 9     
民族:
10          
11          php
12          $db = new MySQLi("localhost","root","","mydb");
13          !mysqli_connect_error() or die("连接失败！");
14          $sql = "select * from Nation";
15          $r = $db->query($sql);
16          $att = $r->fetch_all();
17          foreach($att as $v)
18          {
19              echo "{$v[1]}";
20          }
21          ?>
22          
23     
24     
生日：
25     

26 

AddChuLi页面（添加数据处理页面）

 1 php
 2 $code = $_POST["code"];
 3 $name = $_POST["name"];
 4 $sex  = $_POST["sex"];
 5 $s = 1;
 6 if($sex =="女")
 7 {
 8     $s=0;
 9 }
10 $nation = $_POST["nation"];
11 $birthday = $_POST["birthday"];
12 $db = new MySQLi("localhost","root","","mydb");
13 !mysqli_connect_error() or die("连接失败！");
14 $sql = "insert into Info values('{$code}','{$name}','{$s}','{$nation}','{$birthday}')";
15 $result = $db->query($sql);
16 if($result)
17 {
18     header("location:main.php");
19 }
20 else
21 {
22     echo "添加失败！";
23 }

Delete页面（删除数据页面）

 1 php
 2 $code = $_GET["code"];
 3 $db = new MySQLi("localhost","root","","mydb");
 4 !mysqli_connect_error() or die("连接失败！");
 5 $sql = "delete from Info where Code ='{$code}'";
 6 $r = $db->query($sql);
 7 if($r)
 8 {
 9     header("location:main.php");
10 }
11 else
12 {
13     echo "删除失败！";
14 }

Update页面（修改数据页面）

 1 
修改数据
 2 php
 3 $code = $_GET["code"];
 4 $db = new MySQLi("localhost","root","","mydb");
 5 !mysqli_connect_error() or die("连接失败！");
 6 $sql1 = "select * from Info where Code='{$code}'";
 7 $r1 = $db->query($sql1);
 8 $att1 = $r1->fetch_row();
 9 
10 ?>
11 

12     
代号：$att1[0] ?>" />
13     
姓名：$att1[1] ?>" />
14     
性别：
15          echo $att1[2] ? "checked='checked'" : ""; ?> />男
16          echo $att1[2] ? "" : "checked='checked'"; ?> />女
17     
18     
民族:
19          
20          php
21          $db = new MySQLi("localhost","root","","mydb");
22          !mysqli_connect_error() or die("连接失败！");
23          $sql = "select * from Nation";
24          $r = $db->query($sql);
25          $att = $r->fetch_all();
26          foreach($att as $v)
27          {
28              if($att1[3]==$v[0])
29              {
30                  echo "{$v[1]}";
31              }
32              else
33              {
34                  echo "{$v[1]}";
35              }
36              
37          }
38          ?>
39          
40     
41     
生日：$att1[4] ?>"/>
42     

43 

UpdateChuLi页面（修改数据处理页面）

 1 php
 2 $code = $_POST["code"];
 3 $name = $_POST["name"];
 4 $sex  = $_POST["sex"];
 5 $s=1;
 6 if($sex=="女")
 7 {
 8     $s=0;
 9 }
10 $nation = $_POST["nation"];
11 $birthday = $_POST["birthday"];
12 $db = new MySQLi("localhost","root","","mydb");
13 !mysqli_connect_error() or die("连接失败！");
14 $sql = "update Info set Name='{$name}',Sex={$s},Nation='{$nation}',Birthday='{$birthday}' where Code='{$code}'";
15 $r = $db->query($sql);
16 if($r)
17 {
18     header("location:main.php");
19 }
20 else
21 {
22     echo "修改失败！";
23 }

 

转载于:https://www.cnblogs.com/zk0533/p/5459923.html