How can error handling be improved in the PHP code snippet provided to better identify issues with data retrieval from a MySQL database?

The issue with the current PHP code snippet is that it lacks proper error handling for data retrieval from a MySQL database. To improve error handling and better identify issues with data retrieval, we can use try-catch blocks to catch and handle any exceptions that may occur during the database query execution. 

<?php
$servername = "localhost";
$username = "username";
$password = "password";
$dbname = "database";

try {
    $conn = new PDO("mysql:host=$servername;dbname=$dbname", $username, $password);
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);

    $stmt = $conn->prepare("SELECT * FROM table");
    $stmt->execute();

    $result = $stmt->fetchAll(PDO::FETCH_ASSOC);

    // Process the retrieved data here

} catch(PDOException $e) {
    echo "Error: " . $e->getMessage();
}

$conn = null;
?>

Keywords

PHP error handling MySQL data retrieval debugging

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