Execute an INSERT statement using a prepared PDO statement and bound values.
The examples focus on the operation itself, including the important distinction: An UPDATE modifies an existing row; INSERT creates a row.
What It Does
Use the examples below to observe the behavior on a small dataset before extending it to application code.
Before You Start
The examples use PHP 8.2+ features where shown. Database snippets require the corresponding PDO driver, demo tables, and credentials configured outside source code.
Example 1: Basic Use
The positional placeholders bind two values; lastInsertId is driver-specific and meaningful for generated primary keys.
<?php
$pdo = new PDO(
"mysql:host=" . (getenv("DB_HOST") ?: "127.0.0.1") . ";dbname=" . (getenv("DB_NAME") ?: "demo") . ";charset=utf8mb4",
getenv("DB_USER") ?: "app",
getenv("DB_PASSWORD") ?: "",
[PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION, PDO::ATTR_EMULATE_PREPARES => false]
);
$email = '[email protected]';
$stmt = $pdo->prepare("INSERT INTO users (email, active) VALUES (?, ?)");
$stmt->execute([$email, 0]);
echo $pdo->lastInsertId();This example is meant for a configured application environment; output depends on the installed extension, external service, or database contents.
Example 2: Checking Behavior
The positional placeholders bind two values; lastInsertId is driver-specific and meaningful for generated primary keys.
<?php
$pdo = new PDO(
"mysql:host=" . (getenv("DB_HOST") ?: "127.0.0.1") . ";dbname=" . (getenv("DB_NAME") ?: "demo") . ";charset=utf8mb4",
getenv("DB_USER") ?: "app",
getenv("DB_PASSWORD") ?: "",
[PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION, PDO::ATTR_EMULATE_PREPARES => false]
);
$email = '[email protected]';
$stmt = $pdo->prepare("INSERT INTO users (email, active) VALUES (?, ?)");
$stmt->execute([$email, 0]);
echo $pdo->lastInsertId();This example is meant for a configured application environment; output depends on the installed extension, external service, or database contents.
Example 3: Practical Example
The positional placeholders bind two values; lastInsertId is driver-specific and meaningful for generated primary keys.
<?php
$pdo = new PDO(
"mysql:host=" . (getenv("DB_HOST") ?: "127.0.0.1") . ";dbname=" . (getenv("DB_NAME") ?: "demo") . ";charset=utf8mb4",
getenv("DB_USER") ?: "app",
getenv("DB_PASSWORD") ?: "",
[PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION, PDO::ATTR_EMULATE_PREPARES => false]
);
$email = '[email protected]';
$stmt = $pdo->prepare("INSERT INTO users (email, active) VALUES (?, ?)");
$stmt->execute([$email, 0]);
echo $pdo->lastInsertId();This example is meant for a configured application environment; output depends on the installed extension, external service, or database contents.
Important Behavior and Edge Cases
Never infer success solely from a returned ID; handle PDO exceptions and transaction boundaries.
Comparison with Related Approaches
| Approach | Difference |
|---|---|
| Inserting Database Records with PDO | Execute an INSERT statement using a prepared PDO statement and bound values. |
| Related API or alternative | An UPDATE modifies an existing row; INSERT creates a row. |
Common Beginner Mistakes
| Mistake | Correct approach |
|---|---|
| Ignoring the operation-specific limits | Never infer success solely from a returned ID; handle PDO exceptions and transaction boundaries. |
| Confusing it with a related API | An UPDATE modifies an existing row; INSERT creates a row. |
Key Takeaways
- Execute an INSERT statement using a prepared PDO statement and bound values.
- Never infer success solely from a returned ID; handle PDO exceptions and transaction boundaries.
- An UPDATE modifies an existing row; INSERT creates a row.
Use Inserting Database Records with PDO when its documented behavior matches the problem. Test the relevant edge cases in your own runtime before deploying it.