What are some best practices for handling errors and ensuring data integrity in PHP database queries?

Issue: Handling errors and ensuring data integrity in PHP database queries is crucial to prevent data corruption and maintain the reliability of your application. To ensure data integrity and handle errors in PHP database queries, you can use try-catch blocks to catch exceptions thrown by database operations and rollback transactions in case of errors. 

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

    $pdo->beginTransaction();

    // Perform database queries here

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

Keywords

try-catch PDO prepared statements SQL injection error handling

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