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 $pdo->setAttribute(PDO::ATTR_STRINGIFY_FETCHES, false); // default in v2.0 $pdo->setAttribute(PDO::ATTR_DEFAULT_FETCH_MODE, PDO::FETCH_TYPED_OBJECT); PDO 2.0 replaces the generic PDOException with a hierarchy:
| SQL Type | PHP Type | |----------|----------| | INT , SMALLINT | int | | DECIMAL , NUMERIC | string (or float with opt-in) | | BOOLEAN , BIT | bool | | DATE , DATETIME | DateTimeImmutable | | JSON , JSONB | array / stdClass |
// Auto-recognizes :named, ? and new @named style $result = $pdo->run("SELECT * FROM users WHERE id = @id AND status = @status", ['id' => 5, 'status' => 'active']); A major extension for high-throughput applications. PDO 2.0 introduces promise-like async execution.
$stmt = $pdo->prepare("SELECT * FROM users WHERE id = :id AND status = :status"); $stmt->execute([':id' => 5, ':status' => 'active']); pdo v2.0 extended features
Adopt PDO 2.0 for new projects and plan migration for legacy systems requiring high throughput or strict type handling. End of Report
use PDOQueryException; try $count = $pdo->fetchScalar( "SELECT COUNT(*) FROM users WHERE role = @role AND active = 1", ['role' => 'admin'] ); // returns int directly catch (PDOQueryException $e) $pdo->getQueryLog()->dump(); throw $e;
PDO 2.0's extended features modernize PHP database interaction by reducing verbosity, adding async capabilities, enforcing type safety, and improving debugging. It bridges the gap between low-level drivers and full ORMs, making it suitable for both microservices and complex enterprise applications. $stmt = $pdo->prepare("SELECT * FROM users WHERE id
Date: October 2023 (based on RFC discussions & PHP 8.2+ ecosystem) Author: Database Abstraction Layer Team Version: PDO 2.0 (Proposed/Conceptual Extended Feature Set) 1. Executive Summary PDO 2.0 represents a significant modernization of PHP’s database abstraction layer. While traditional PDO provided a secure, uniform interface, version 2.0 introduces type-safe operations , asynchronous query support , improved error handling , and native scalar result mapping . These features aim to reduce boilerplate code, improve developer experience (DX), and align PDO with modern ORM-like capabilities without sacrificing performance. 2. Core Extended Features 2.1 Scalar & Single-Row Result Fetching Traditional PDO required verbose handling for single values. PDO 2.0 introduces dedicated fetch modes:
$logs = $promise1->wait(); $stats = $promise2->wait(); PDO 2.0 automatically maps database column types to native PHP types based on schema metadata.
$promise1 = $pdo->queryAsync("SELECT * FROM logs WHERE date = CURDATE()"); $promise2 = $pdo->queryAsync("UPDATE stats SET views = views + 1"); // Do other work... Date: October 2023 (based on RFC discussions & PHP 8
Eliminates need for manual fetchColumn(0) or fetch(PDO::FETCH_COLUMN) . 2.2 Named Placeholders with Native Array Unpacking PDO 2.0 extends named placeholder support to automatically unpack associative arrays without binding each parameter individually.
| Method | Description | Example | |--------|-------------|---------| | fetchScalar() | Returns single column from first row | $count = $pdo->fetchScalar("SELECT COUNT(*) FROM users"); | | fetchSingle() | Returns first row as object/array | $user = $pdo->fetchSingle("SELECT * FROM users WHERE id = ?", [1]); | | fetchColumnDefault() | Returns column with type inference | $email = $pdo->fetchColumnDefault("SELECT email FROM users LIMIT 1"); |