PHP PDOStatement::getAttribute() Method: Usage and Examples

Reads a statement attribute supported by the database driver.

The objective is to understand the behavior and operational limits, not only the method name.

What It Does

Reads a statement attribute supported by the database driver.

Syntax and Return Value

PDOStatement::getAttribute(Parameter #0 [ <required> int $name ]): mixed

The return value and exceptional cases depend on the call described here: There are no widely portable statement-specific attributes; unsupported ones may fail.

Example 1: Basic Use

The statement has a real query and result set; database-specific metadata and statement options may be unsupported.

<?php
$pdo = new PDO('sqlite::memory:', null, null, [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION]);
$pdo->exec('CREATE TABLE products (id INTEGER PRIMARY KEY, name TEXT NOT NULL, price INTEGER NOT NULL, active INTEGER)');
$pdo->exec("INSERT INTO products (id,name,price,active) VALUES (1,'Desk',120,1),(2,'Lamp',35,1),(3,'Chair',85,0)");
$stmt = $pdo->query("SELECT name FROM products");
try { var_dump($stmt->getAttribute(PDO::ATTR_CURSOR_NAME)); } catch (PDOException $e) { echo "Cursor names unsupported by this driver"; }

Example 2: A Second Scenario

The statement has a real query and result set; database-specific metadata and statement options may be unsupported. This additional check distinguishes the method's result from connection or statement state.

<?php
$pdo = new PDO('sqlite::memory:', null, null, [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION]);
$pdo->exec('CREATE TABLE products (id INTEGER PRIMARY KEY, name TEXT NOT NULL, price INTEGER NOT NULL, active INTEGER)');
$pdo->exec("INSERT INTO products (id,name,price,active) VALUES (1,'Desk',120,1),(2,'Lamp',35,1),(3,'Chair',85,0)");
$stmt = $pdo->query("SELECT name FROM products");
try { var_dump($stmt->getAttribute(PDO::ATTR_CURSOR_NAME)); } catch (PDOException $e) { echo "Cursor names unsupported by this driver"; }
echo "Driver: " . $pdo->getAttribute(PDO::ATTR_DRIVER_NAME);

Example 3: Practical Checks

The statement has a real query and result set; database-specific metadata and statement options may be unsupported. This additional check distinguishes the method's result from connection or statement state.

<?php
$pdo = new PDO('sqlite::memory:', null, null, [PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION]);
$pdo->exec('CREATE TABLE products (id INTEGER PRIMARY KEY, name TEXT NOT NULL, price INTEGER NOT NULL, active INTEGER)');
$pdo->exec("INSERT INTO products (id,name,price,active) VALUES (1,'Desk',120,1),(2,'Lamp',35,1),(3,'Chair',85,0)");
$stmt = $pdo->query("SELECT name FROM products");
try { var_dump($stmt->getAttribute(PDO::ATTR_CURSOR_NAME)); } catch (PDOException $e) { echo "Cursor names unsupported by this driver"; }
echo "No portable statement options are supported by this driver";

Important Behavior and Edge Cases

There are no widely portable statement-specific attributes; unsupported ones may fail.

For production use, also account for error handling, data validation, resource limits and environment-specific driver behavior.

Comparison with Related Approaches

Common Beginner Mistakes

Key Takeaways

• Reads a statement attribute supported by the database driver.
• There are no widely portable statement-specific attributes; unsupported ones may fail.
• PDO::getAttribute reads attributes of the connection, not the statement.

Choose this API or pattern when its exact semantics match your task, and verify the result against the database driver and runtime used by your application.