The PDO class

(PHP 5 >= 5.1.0, PHP 7, PHP 8, PECL pdo >= 0.1.0)

Introduction

Represents a connection between PHP and a database server.

Class synopsis

class PDO {

/* Methods */

public __construct(
    string $dsn,
    ?string $username = null,
    ?string $password = null,
    ?array $options = null
)

public beginTransaction(): bool

public commit(): bool

public errorCode(): ?string

public errorInfo(): array

public exec(string $statement): int|false

public getAttribute(int $attribute): mixed

public static getAvailableDrivers(): array

public inTransaction(): bool

public lastInsertId(?string $name = null): string|false

public prepare(string $query, array $options = []): PDOStatement|false

public query(string $query, ?int $fetchMode = null): PDOStatement|false

public query(string $query, ?int $fetchMode = PDO::FETCH_COLUMN, int $colno): PDOStatement|false

public query(
    string $query,
    ?int $fetchMode = PDO::FETCH_CLASS,
    string $classname,
    array $constructorArgs
): PDOStatement|false

public query(string $query, ?int $fetchMode = PDO::FETCH_INTO, object $object): PDOStatement|false

public quote(string $string, int $type = PDO::PARAM_STR): string|false

public rollBack(): bool

public setAttribute(int $attribute, mixed $value): bool

}

PDO::beginTransaction — Initiates a transaction
PDO::commit — Commits a transaction
PDO::__construct — Creates a PDO instance representing a connection to a database
PDO::errorCode — Fetch the SQLSTATE associated with the last operation on the database handle
PDO::errorInfo — Fetch extended error information associated with the last operation on the database handle
PDO::exec — Execute an SQL statement and return the number of affected rows
PDO::getAttribute — Retrieve a database connection attribute
PDO::getAvailableDrivers — Return an array of available PDO drivers
PDO::inTransaction — Checks if inside a transaction
PDO::lastInsertId — Returns the ID of the last inserted row or sequence value
PDO::prepare — Prepares a statement for execution and returns a statement object
PDO::query — Prepares and executes an SQL statement without placeholders
PDO::quote — Quotes a string for use in a query
PDO::rollBack — Rolls back a transaction
PDO::setAttribute — Set an attribute