PDO::pgsqlLOBUnlink
(PHP 5 >= 5.1.2, PECL pdo_pgsql >= 1.0.2)
PDO::pgsqlLOBUnlink — Deletes the large object
Description
public bool PDO::pgsqlLOBUnlink
( string
$oid
)Deletes a large object from the database identified by OID.
Note: This function must be called within a transaction.
Parameters
-
oid -
A large object identifier
Return Values
Returns TRUE on success or FALSE on failure.
Examples
Example #1 A PDO::pgsqlLOBUnlink() example
This example unlinks a large object from the database prior to deleting the row that references it from the blobs table we've been using in our PDO::pgsqlLOBCreate() and PDO::pgsqlLOBOpen() examples.
<?php
$db = new PDO('pgsql:dbname=test host=localhost', $user, $pass);
$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
$db->beginTransaction();
$db->pgsqlLOBUnlink($oid);
$stmt = $db->prepare("DELETE FROM BLOBS where ident = ?");
$stmt->execute(array($some_id));
$db->commit();
?>
See Also
- PDO::pgsqlLOBOpen() - Opens an existing large object stream
- PDO::pgsqlLOBCreate() - Creates a new large object
- PHP Руководство
- Функции по категориям
- Индекс функций
- Справочник функций
- Расширения для работы с базами данных
- Уровни абстракции
- Объекты данных PHP
- PDO Драйверы
- Функция PDO_PGSQL DSN() - Connecting to PostgreSQL databases
- PDO::pgsqlCopyFromArray
- PDO::pgsqlCopyFromFile
- PDO::pgsqlCopyToArray
- PDO::pgsqlCopyToFile
- PDO::pgsqlGetNotify
- PDO::pgsqlGetPid
- Функция PDO::pgsqlLOBCreate() - Creates a new large object
- Функция PDO::pgsqlLOBOpen() - Opens an existing large object stream
- Функция PDO::pgsqlLOBUnlink() - Deletes the large object
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