PostgreSQL Functions (PDO_PGSQL)

簡介

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

資源類型

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

安裝

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

預(yù)定義常量

下列常量由此驅(qū)動(dòng)定義，且僅在擴(kuò)展編譯入 PHP 或在運(yùn)行時(shí)動(dòng)態(tài)載入時(shí)可用。另外，使用此驅(qū)動(dòng)時(shí)，僅會(huì)使用這些驅(qū)動(dòng)特定的常量。使用其他驅(qū)動(dòng)的驅(qū)動(dòng)特定的常量可能會(huì)導(dǎo)致不可預(yù)見的情況。如果代碼可運(yùn)行于多個(gè)驅(qū)動(dòng)，PDO::getAttribute() 可被用于獲取 PDO_ATTR_DRIVER_NAME 屬性以檢查驅(qū)動(dòng)。

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.