Question

我制作了一个简单的网页，任何人都可以在文本框中输入文字，然后该文字将存储到数据库并放在屏幕上。目前，最近发布的文本位于页面底部。我希望它被颠倒过来;顶部最新，底部最旧。这是我的代码：

<html>
<head><title>JANNEchat Beta</title></head>
<form action="index.php" method="post" />
<p>Send a message to JANNES database: <input type="text" name="input1" />   
      </p><input type="submit" value"Submit" />
</form>

</html>
<?php

error_reporting(E_ALL ^ E_DEPRECATED);
define('DB_NAME', 'janne');
define('DB_USER', 'root');
define('DB_PASSWORD', '');
define('DB_HOST', 'localhost');


$link = mysql_connect(DB_HOST, DB_USER, DB_PASSWORD);

if(!$link){
die('Nu är något vajsing, kunde inte ansluta ' . mysql_error());
}
$db_selected = mysql_select_db(DB_NAME, $link);

if(!$db_selected){
die('Nu spelas det trix, kan inte hitta databasen ' . DB_NAME . ' : ' .        
             mysql_error());   }

$value = isset($_POST['input1']) ? $_POST['input1'] : '';

if($value != ''){
$sql = "INSERT INTO janne (String) VALUES ('$value')";
if(!mysql_query($sql)){
die('vajsing: ' . mysql_error());
}
}

mysql_close();

$servername = "localhost";
$username = "root";
$password = "";
$dbname = "janne";

// Create connection
$conn = new mysqli($servername, $username, $password, $dbname);
// Check connection
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
} 

$sql = "SELECT String FROM janne";
$result = $conn->query($sql);
//$a = $result->num_rows - $result->fetch_assoc();
if ($result->num_rows > 0) {
// output data of each row
while($row = $result->fetch_assoc()) {
//THE PROBLEM IS HERE, I GUESS.     
    echo $row["String"] . "<br>";
   }
 } else {
 echo "0 results";
}

$conn->close();
?>

Answer 1

只需更新SQL

即可

$sql = "SELECT String FROM janne ORDER BY id DESC";

此处id可能是您表格中的Auto Increment字段。

以相反的顺序使PHP循环回显

1 个答案: