PHP data access add, delete, modify and check operations, PHP data access add and delete

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PHP data access add, delete, modify and check operations, PHP data access add and delete_PHP tutorial

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Jul 12, 2016 am 08:52 AM

php Add, delete, modify and check data access

Add, delete, modify and check operations of php data access, add and delete php data access

Small practice on add, delete, modify and check operations, let’s practice it

1. View the news page-----main page

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>查看新闻</title>
</head>
 
<body>
<h1>查看新闻</h1>
<table width="100%" border="1" cellpadding="0" cellspacing="0">
<tr>
  <td>id</td>
  <td>title</td>
  <td>author</td>
  <td>source</td>
   <td>content</td>
  <td>date</td>
  <td>update</td>
  <td>delete</td>
</tr>
<&#63;php
$db=new MySQLi("localhost","root","","mydb");
!mysqli_connect_error() or die("连接失败！");
$sql="select * from news";
$result=$db->query($sql);
$arr=$result->fetch_all();
foreach ($arr as $v)
{
  echo "<tr>
  <td>{$v[0]}</td>
  <td>{$v[1]}</td>
  <td>{$v[2]}</td>
  <td>{$v[3]}</td>
  <td>{$v[4]}</td>
  <td>{$v[5]}</td>
  <td><a href='Update.php&#63;newsid={$v[0]}'>update</a></td>
  <td><a href='Delete.php&#63;newsid={$v[0]}'>delete</a></td>
   
  </tr>";
  }
 
&#63;>
</table>
<br>
<br />
<div class="xw"><a href="xinwen.php">发布新闻</a></div>
 
</body>
</html>

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2. Publish news page-----Add content

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>发布新闻</title>
<style>
.xw
{
   
  margin-top:10px;
  margin-left:400px;
  border:thick; 
  }
.a
{
  float:left;
   
  }
 
</style>
 
</head>
 
<body>
<h1><center>发布新闻</center></h1>
 
<form action="AddChu.php" method="post">
<div class="xw">标题：<input type="text" name="title" style="width:400px"></div>
<div class="xw">作者：<input type="text" name="author"></div>
<div class="xw">来源：<input type="text" name="source"></div>
<div class="xw">内容:
<textarea rows="10" cols="80" name="content"></textarea></div>
 
<div class="a"><input type="submit" value="提交" style="margin-left:600px;"></div>
<div class="a"><a href="ChaKan.php"><input type="button" value="查看" style="margin-left:6px;"></a></div>
 
</form>
 
 
</body>
</html>

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Processing after submitting content:

<&#63;php
$newsid=$_POST["newsid"];
$title=$_POST["title"];
$author=$_POST["author"];
$source=$_POST["source"];
$content=$_POST["content"];
$time=date("Y-m-d",time());
 
$db=new MySQLi("localhost","root","","mydb");
!mysqli_connect_error() or die("联系失败!");
$sql="insert into news values('{$newsid}','{$title}','{$author}','{$source}','{$content}','{$time}')";
$result=$db->query($sql);
if($result)
{
  header ("location:xinwen.php");
  }
else
{
  echo "添加新闻失败！";
  }

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3. Deletion of content

<&#63;php
$newsid=$_GET["newsid"];
$db=new MySQLi("localhost","root","","mydb");
!mysqli_connect_error() or die("连接失败!");
$sql="delete from news where newsid='{$newsid}'";
$result=$db->query($sql);
if($result)
{
  header ("location:ChaKan.php");
  }
else
{
  echo "删除数据失败";
  }
&#63;>

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4. Modify the news page----modify the news content and submit it for viewing

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>修改新闻</title>
<style>
.xw
{
   
  margin-top:10px;
  margin-left:400px;
  border:thick; 
  }
   
.a
{
  float:left;
   
  }
 
</style>
</head>
 
<body>
<h1><center>修改新闻</center></h1>
<&#63;php
$newsid = $_GET["newsid"];
$db = new MySQLi("localhost","root","","mydb");
$sinfo = "select * from news where newsid='{$newsid}'";
$r = $db->query($sinfo);
$arr = $r->fetch_row(); //这个人的所有信息
&#63;>
 
<form action="UpdateChu.php" method="post">
<div class="xw"><input type="hidden" name="newsid" value="<&#63;php echo $arr[0] &#63;>"></div>
<div class="xw">标题：<input type="text" name="title" style="width:400px" value="<&#63;php echo $arr[1] &#63;>"></div>
<div class="xw">作者：<input type="text" name="author" value="<&#63;php echo $arr[2] &#63;>"></div>
<div class="xw">来源：<input type="text" name="source" value="<&#63;php echo $arr[3] &#63;>"></div>
<div class="xw">内容:
<textarea rows="10" cols="80" name="content"><&#63;php echo $arr[4] &#63;></textarea></div>
 
<div class="a"><input type="submit" value="修改" style="margin-left:600px;"></div>
<div class="a"><a href="ChaKan.php"><input type="button" value="查看" style="margin-left:6px;"></a></div>
 
</form>
 
</body>
</html>

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Submit the modified content for processing:

<&#63;php
$newsid=$_POST["newsid"];
$title=$_POST["title"];
$author=$_POST["author"];
$source=$_POST["source"];
$content=$_POST["content"];
$time=date("Y-m-d",time());

$db=new MySQLi("localhost","root","","mydb");
!mysqli_connect_error() or die("联系失败!");
$sql="update news set title='{$title}',author='{$author}',source='{$source}',content='{$content}',time='{$time}' where newsid='{$newsid}'";
$result=$db->query($sql);
if($result)
{
  header ("location:Update.php");
  }
else
{
  echo "修改数据失败!";
  }

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The above is the entire content of this article. I hope it will be helpful to everyone in learning PHP programming.

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