在数据库结构中选择表

Question

我正在使用Xampp localhost。如何在数据库结构中选择数据库？这是我的代码。

 <?php
    $servername = "localhost";
    $username = "root";
    $password = "";

    try {
        $conn = new PDO("mysql:host=$servername;dbname=lifeands_phdb_150522", $username, $password);
        // set the PDO error mode to exception
        $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
        //echo "Connected successfully";
        }
    catch(PDOException $e)
        {
        echo "Connection failed: " . $e->getMessage();
        }
?> 

我想选择数据库名称loan_calculator。这是数据库的图片。

任何人都可以提供帮助吗？

Answer 1

从“lifeands_phdb_150522”DB的“loan_calculator”表中获取。选择数据库并编写查询以从表中获取数据

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

try {
    $conn = new PDO("mysql:host=$servername;dbname=lifeands_phdb_150522", $username, $password);
    // set the PDO error mode to exception
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    //echo "Connected successfully";
} catch(PDOException $e) {
    echo "Connection failed: " . $e->getMessage();
}

//to query table   
$sql = 'SELECT *  FROM loan_calculator'; 
$res = $conn->query($sql, PDO::FETCH_ASSOC);
foreach ($res as $row) {
    echo "<pre>";
    print_r($row);
    echo "</pre>";
}

Answer 2

你可以试试这个

\d