PHP develops simple voting system administrator function module (4)

The main purpose here is to add the name of the new voting title in the <input> text box

Then when you click "Add New Item", it will be displayed in the voting title bar The newly added title,

and adds new data in the database.

<input name="newitem" type="text" id="newitem" />
<input type="submit" name="Submit2" value="添加新项" />

Add new items to the database table by operating the database SQL language INSERT INTO.

<?php
    if(isset($_POST["Submit2"]))
    {
     $newitem=$_POST["newitem"];
     $SQL="INSERT INTO vote (titleid,item,count) VALUES (1,'$newitem',1)";
     mysqli_query($link,$sql);
    }
?>

Add "Exit management" after "Add new item" and jump to the voting page index.php

Exit the management main operation session, delete the session file corresponding to the current user and release session to log out as administrator.

HTML code:

<a href="?tj=out">退出管理</a>

PHP code:

<?php
if(isset($_GET['tj']) == 'out'){
  session_destroy();//删除当前用户对应的session文件以及释放session
  echo "<script language=javascript>alert('退出成功！');window.location='index.php'</script>";
}
?>