PDO
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What is PDO?
PDO (PHP Data Objects) is an interface in PHP that provides a lightweight, consistent way for working with databases in PHP. PDO allows you to use any database without changing your PHP code, making your code database-independent. Furthermore, it offers robust error handling and can utilize prepared statements to prevent SQL injection attacks. Here is how you could connect and fetch data from a MySQL database using PDO:
try {
$pdo = new PDO('mysql:host=localhost;dbname=test', 'username', 'password');
$stmt = $pdo->query('SELECT * FROM myTable');
while ($row = $stmt->fetch()) {
echo $row['name'] . "\n";
}
} catch (PDOException $e) {
echo "Connection failed: " . $e->getMessage();
}
Free resources to learn PDO
- Official docsData Objects
More in stage 11: OOP Fundamentals
- OOP Fundamentals
- Classes and Objects
- Constructor / Destructor
- Properties and Methods
- Access Specifiers
- Static Methods and Properties
- Inheritance
- Input Validation
- SQL Injection
- XSS Prevention
- CSRF Protection
- Password Hashing
- Auth Mechanisms
- Sanitization Techniques
- MySQLi
- Object-Relational Mapping (ORM)
- Database Transactions
- Connection Pooling
- Performance Optimization
- Database Migrations
PDO: common questions
Can I learn PDO in Hindi?
This lesson is written in English. Once you sign in, open it in the interactive course and ask the AI tutor to explain PDO in Hindi or Hinglish. The tutor answers from this lesson’s own text, so it stays on the syllabus, and it runs on your own Google, OpenAI or Anthropic key.
Is this PDO tutorial for beginners?
It is lesson 74 of 120 in the free PHP roadmap, in stage 11, OOP Fundamentals. If you are new to PHP, start from stage 1 and come back here in order; if you already know the earlier stages, this lesson stands on its own.