Pdo\Pgsql クラス

(PHP 8 >= 8.4.0)

はじめに

PostgreSQL PDO ドライバによる接続を示す PDO サブクラスです。

このドライバは PostgreSQL 方言向けに専用の SQL クエリパーサーをサポートしています。次のものを処理可能です:

シングルクオートやダブルクオートで囲まれたリテラルでのクオートの二重化によるエスケープ
C 言語形式の「エスケープ」文字列リテラル
ドル記号で囲まれた文字列リテラル
2 つのハイフンによるコメント、ネストされていない C 言語形式のコメント
? 演算子のエスケープシーケンスとしての ?? のサポート

クラス概要

class Pdo\Pgsql extends PDO {

/* 継承した定数 */

public const int PDO::PARAM_NULL;

public const int PDO::PARAM_BOOL = 5;

public const int PDO::PARAM_INT = 1;

public const int PDO::PARAM_STR = 2;

public const int PDO::PARAM_LOB = 3;

public const int PDO::PARAM_STMT = 4;

public const int PDO::PARAM_INPUT_OUTPUT;

public const int PDO::PARAM_STR_NATL;

public const int PDO::PARAM_STR_CHAR;

public const int PDO::PARAM_EVT_ALLOC;

public const int PDO::PARAM_EVT_FREE;

public const int PDO::PARAM_EVT_EXEC_PRE;

public const int PDO::PARAM_EVT_EXEC_POST;

public const int PDO::PARAM_EVT_FETCH_PRE;

public const int PDO::PARAM_EVT_FETCH_POST;

public const int PDO::PARAM_EVT_NORMALIZE;

public const int PDO::FETCH_DEFAULT;

public const int PDO::FETCH_LAZY;

public const int PDO::FETCH_ASSOC;

public const int PDO::FETCH_NUM;

public const int PDO::FETCH_BOTH;

public const int PDO::FETCH_OBJ;

public const int PDO::FETCH_BOUND;

public const int PDO::FETCH_COLUMN;

public const int PDO::FETCH_CLASS;

public const int PDO::FETCH_INTO;

public const int PDO::FETCH_FUNC;

public const int PDO::FETCH_GROUP;

public const int PDO::FETCH_UNIQUE;

public const int PDO::FETCH_KEY_PAIR;

public const int PDO::FETCH_CLASSTYPE;

public const int PDO::FETCH_SERIALIZE;

public const int PDO::FETCH_PROPS_LATE;

public const int PDO::FETCH_NAMED;

public const int PDO::ATTR_AUTOCOMMIT;

public const int PDO::ATTR_PREFETCH;

public const int PDO::ATTR_TIMEOUT;

public const int PDO::ATTR_ERRMODE;

public const int PDO::ATTR_SERVER_VERSION;

public const int PDO::ATTR_CLIENT_VERSION;

public const int PDO::ATTR_SERVER_INFO;

public const int PDO::ATTR_CONNECTION_STATUS;

public const int PDO::ATTR_CASE;

public const int PDO::ATTR_CURSOR_NAME;

public const int PDO::ATTR_CURSOR;

public const int PDO::ATTR_ORACLE_NULLS;

public const int PDO::ATTR_PERSISTENT;

public const int PDO::ATTR_STATEMENT_CLASS;

public const int PDO::ATTR_FETCH_TABLE_NAMES;

public const int PDO::ATTR_FETCH_CATALOG_NAMES;

public const int PDO::ATTR_DRIVER_NAME;

public const int PDO::ATTR_STRINGIFY_FETCHES;

public const int PDO::ATTR_MAX_COLUMN_LEN;

public const int PDO::ATTR_EMULATE_PREPARES;

public const int PDO::ATTR_DEFAULT_FETCH_MODE;

public const int PDO::ATTR_DEFAULT_STR_PARAM;

public const int PDO::ERRMODE_SILENT;

public const int PDO::ERRMODE_WARNING;

public const int PDO::ERRMODE_EXCEPTION;

public const int PDO::CASE_NATURAL;

public const int PDO::CASE_LOWER;

public const int PDO::CASE_UPPER;

public const int PDO::NULL_NATURAL;

public const int PDO::NULL_EMPTY_STRING;

public const int PDO::NULL_TO_STRING;

public const string PDO::ERR_NONE;

public const int PDO::FETCH_ORI_NEXT;

public const int PDO::FETCH_ORI_PRIOR;

public const int PDO::FETCH_ORI_FIRST;

public const int PDO::FETCH_ORI_LAST;

public const int PDO::FETCH_ORI_ABS;

public const int PDO::FETCH_ORI_REL;

public const int PDO::CURSOR_FWDONLY;

public const int PDO::CURSOR_SCROLL;

/* 定数 */

public const int ATTR_DISABLE_PREPARES;

public const int ATTR_RESULT_MEMORY_SIZE;

public const int TRANSACTION_IDLE;

public const int TRANSACTION_ACTIVE;

public const int TRANSACTION_INTRANS;

public const int TRANSACTION_INERROR;

public const int TRANSACTION_UNKNOWN;

/* メソッド */

public copyFromArray(
    string $tableName,
    array $rows,
    string $separator = "\t",
    string $nullAs = "\\\\N",
    ?string $fields = null
): bool

public copyFromFile(
    string $tableName,
    string $filename,
    string $separator = "\t",
    string $nullAs = "\\\\N",
    ?string $fields = null
): bool

public copyToArray(
    string $tableName,
    string $separator = "\t",
    string $nullAs = "\\\\N",
    ?string $fields = null
): array|false

public copyToFile(
    string $tableName,
    string $filename,
    string $separator = "\t",
    string $nullAs = "\\\\N",
    ?string $fields = null
): bool

public escapeIdentifier(string $input): string

public getNotify(int $fetchMode = PDO::FETCH_DEFAULT, int $timeoutMilliseconds = 0): array|false

public getPid(): int

public lobCreate(): string|false

public lobOpen(string $oid, string $mode = "rb"): resource|false

public lobUnlink(string $oid): bool

public setNoticeCallback(?callable $callback): void

/* 継承したメソッド */

public PDO::__construct(
    string $dsn,
    ?string $username = null,
    #[\SensitiveParameter] ?string $password = null,
    ?array $options = null
)

public PDO::beginTransaction(): bool

public PDO::commit(): bool

public static PDO::connect(
    string $dsn,
    ?string $username = null,
    #[\SensitiveParameter] ?string $password = null,
    ?array $options = null
): static

public PDO::errorCode(): ?string

public PDO::errorInfo(): array

public PDO::exec(string $statement): int|false

public PDO::getAttribute(int $attribute): mixed

public static PDO::getAvailableDrivers(): array

public PDO::inTransaction(): bool

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

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

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

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

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

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

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

public PDO::rollBack(): bool

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

}

定義済み定数

Pdo\Pgsql::ATTR_DISABLE_PREPARES: SQL文とパラメータを一緒に、一回のコールでサーバーに送信します。これによって、名前付きのプリペアドステートメントを別々に作ることを避けられます。 SQL文が一度しか実行されない場合、不要なサーバーとの通信を避けられるので、レイテンシを抑えることができます。
Pdo\Pgsql::ATTR_RESULT_MEMORY_SIZE: 指定されたクエリ結果 PDOStatement インスタンスに割り当てられたメモリ使用量をバイト単位で返します。クエリ実行前で結果が存在しない場合は null を返します。
Pdo\Pgsql::TRANSACTION_IDLE
Pdo\Pgsql::TRANSACTION_ACTIVE
Pdo\Pgsql::TRANSACTION_INTRANS
Pdo\Pgsql::TRANSACTION_INERROR
Pdo\Pgsql::TRANSACTION_UNKNOWN

Pdo\Pgsql::copyFromArray — Copy data from a PHP array into a table
Pdo\Pgsql::copyFromFile — Copy data from file into table
Pdo\Pgsql::copyToArray — Copy data from database table into PHP array
Pdo\Pgsql::copyToFile — Copy data from table into file
Pdo\Pgsql::escapeIdentifier — Escapes a string for use as an SQL identifier
Pdo\Pgsql::getNotify — Get asynchronous notification
Pdo\Pgsql::getPid — Get the PID of the backend process handling this connection
Pdo\Pgsql::lobCreate — Creates a new large object
Pdo\Pgsql::lobOpen — Opens an existing large object stream
Pdo\Pgsql::lobUnlink — Deletes the large object
Pdo\Pgsql::setNoticeCallback — Set a callback to handle notice and warning messages generated by the backend

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