面向对象实现留言板

<?php

header("content-Type:text/html;charset=utf8");
class message{
 public $connect;
 public function __construct(){
 $this->connect=mysqli_connect("127.0.0.1","root","root","message");
 if(!$this->connect){
 echo 'false';
 }
 mysqli_query($this->connect,"set names utf8");
 }
 //publish
 public function publish(){
 if(!empty($_POST)){
 $title=$_POST['title'];
 $main=$_POST['main'];
 $time=date("Y-m-d H:i:s",time());
 $sql="insert into `msg` values ('','$title','$main','$time','')";
 $query=mysqli_query($this->connect,$sql);
 if($query){
 header("location:http://127.0.0.1/message/demo.php?c=board");
 }else{
 echo 'false';
 }
 }
 include 'publish.html';
 }

　　//board
public function board(){
    $sql="select *from `msg`";
 $query=mysqli_query($this->connect,$sql);
 $data=array();
 while($row = mysqli_fetch_assoc($query)){
 $data[] = $row;
 }
 include 'board.html';
}
// remove
public function remove(){
 $sql="delete from `msg` where id=".$_GET['id'];
 $query=mysqli_query($this->connect,$sql);
 if($query){
 header("location:http://127.0.0.1/message/demo.php?c=board");
 }else{
 echo '失败';exit;
 }
}

//alter
    public function alter(){
 if(!empty($_POST)){
 $title=$_POST['title'];
 $main=$_POST['main'];
 $time=date("Y-m-d H:i:s",time());
 $sql = "update `msg` set `title`='$title',`main`='$main',`update`='$time' where id=".$_POST['id'];
 $query=mysqli_query($this->connect,$sql);
 if($query){
 header("location:http://127.0.0.1/message/demo.php?c=board");
 }else{
 echo '失败';exit;
 }
 }
 $sql = "select * from `msg` where id=".$_GET['id'];
 $query = mysqli_query($this->connect,$sql);
 $row = mysqli_fetch_assoc($query);
 include 'alter.html';
 }
}
$c = $_GET['c'];
$msg = new message;
$msg->$c();

?>
//board.html

<section>
    <h1>message board</h1>
    <ul>
        <?php foreach($data as $k=>$v) :?>
        <li>
 <span>
 <?php echo $v['title'] ?>
 </span>
 <span>
 <?php echo $v['create'] ?>
 </span>
 <a href="demo.php?c=alter&id=<?php echo $v['id']?>">compile</a>
 <a href="demo.php?c=remove&id=<?php echo $v['id']?>">remove</a>
 <div></div>
 </li>

 <?php endforeach ?>
 </ul>
 <a href="demo.php?c=publish">
 publish
 </a>
</section>


//publish.html

<section>
    <form action="demo.php?c=publish" method="post">
 <span>title</span>
 <input type="text" name="title" placeholder="Write down your topic">
 <div></div>
 <span>main</span>
 <textarea name="main" placeholder="Write down your thoughts"></textarea>
 <div></div>
 <input type="submit" value="publish">
 <a href="demo.php?c=board">board</a>
 </form>
</section>

//alert.html

<section>
    <form action="demo.php?c=alter" method="post">
 <input type="hidden" name="id" value="<?php echo $row['id']?>">
 <span>title</span>
 <input type="text" name="title" value="<?php echo $row['title']?>" placeholder="Write down your topic">
 <div></div>
 <span>main</span>
 <textarea name="main" placeholder="Write down your thoughts"><?php echo $row['main']?></textarea><br>
 <div></div>
 <input type="submit" value="publish">
 <a href="demo.php?c=board">board</a>
 </form>
</section>