Question

我正在尝试以样式方式从数据库输出所有数据。但是，它似乎并不符合要求。这是代码：

我试图输出的方式：

<?php

  include 'database.php';

 $sql = "SELECT * FROM patients";
 $result = $conn->query($sql);

 if ($result->num_rows > 0) {
    // output data of each row
    while($row = $result->fetch_assoc()) {
        echo "<div class='titleBox'>ID: " . $row["id"]. " : First Name : " . $row["fname"]. " : Last Name : " . $row["lastname"] . " : Age : " . $row["age"] . "</div><br>";
        echo "<div class='titleBox'>Description: " . $row["descript"] . "</div><br>";
    }
  } else {
    echo "<div class='titleBox'>No patients on record.</div>";
  }
  $conn->close();

?>

连接数据库：

<?php

        $server = "localhost";
        $username = "root2";
        $password = "passwordking";
        $db = "root2";



        try{
            $conn = new PDO("mysql:host=$server;dbname=$db;", $username, $password);
        } catch(PDOException $e){
            die( "<div class='titleBox'>Connection failed: " . $e->getMessage() . "</div>");
        }

编辑：很抱歉＆＃39;回合。没有任何输出。

Answer 1

你需要告诉我们你得到了什么错误或者脚本有什么问题。

首先，正如Alton在评论中指出的那样，你正在混合PDO和mysqli。你需要坚持一个。让我们以mysqli为例。

your database.php

<?php

$server = "localhost";
$username = "root2";
$password = "passwordking";
$db = "root2";

$conn = new mysqli($server, $username, $password);

if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
}

然后将num_rows保存在变量中并检查它是否＆gt; 0

<?php

include 'database.php';

$sql = "SELECT * FROM patients";
$result = $conn->query($sql);
$rows_num = $result->num_rows; #store the number of rows

#use it in if statement
if ($rows_num > 0) {
   // output data of each row
   while($row = $result->fetch_assoc()) {
       echo "<div class='titleBox'>ID: " . $row["id"]. " : First Name : " . $row["fname"]. " : Last Name : " . $row["lastname"] . " : Age : " . $row["age"] . "</div><br>";
       echo "<div class='titleBox'>Description: " . $row["descript"] . "</div><br>";
   }
} else {
    echo "<div class='titleBox'>No patients on record.</div>";
}

$conn->close();

?>

以样式化方式输出SQL数据库中的所有数据

1 个答案: