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

Returns SQLSTATE associated with the last statement operation.

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

What It Does

Returns SQLSTATE associated with the last statement operation.

Syntax and Return Value

PDOStatement::errorCode(): mixed

The return value and exceptional cases depend on the call described here: A successful operation typically reports 00000; error mode may instead raise PDOException.

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->prepare("SELECT name FROM products WHERE id = ?");
$stmt->execute([1]);
echo $stmt->errorCode() ?? "none";

Example 2: A Second Scenario

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->prepare("SELECT name FROM products WHERE id = ?");
$stmt->execute([2]);
echo $stmt->errorCode() ?? "none";

Example 3: Practical Checks

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->prepare("SELECT name FROM products WHERE id = ?");
$stmt->execute([3]);
echo $stmt->errorCode() ?? "none";

Important Behavior and Edge Cases

A successful operation typically reports 00000; error mode may instead raise PDOException.

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

• Returns SQLSTATE associated with the last statement operation.
• A successful operation typically reports 00000; error mode may instead raise PDOException.
• PDO::errorCode reports connection-level errors.

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.