简介

PDO_PGSQL is a driver that implements the PHP Data Objects (PDO) interface to enable access from PHP to PostgreSQL databases.

资源类型

This extension defines a stream resource returned by PDO::pgsqlLOBOpen().

安装

Use --with-pdo-pgsql[=DIR] to install the PDO PostgreSQL extension, where the optional [=DIR] is the PostgreSQL base install directory, or the path to pg_config.

$ ./configure --with-pdo-pgsql

预定义常量

下列常量由此驱动定义，且仅在扩展编译入 PHP 或在运行时动态载入时可用。另外，使用此驱动时，仅会使用这些驱动特定的常量。使用其他驱动的驱动特定的常量可能会导致不可预见的情况。如果代码可运行于多个驱动，PDO::getAttribute() 可被用于获取 PDO_ATTR_DRIVER_NAME 属性以检查驱动。

PDO::PGSQL_ATTR_DISABLE_PREPARES (int)

Send the query and the parameters to the server together in a single call, avoiding the need to create a named prepared statement separately. If the query is only going to be executed once this can reduce latency by avoiding an unnecessary server round-trip.

General notes

注意:

bytea fields are returned as streams.