(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
pg_lo_create — Create a large object
pg_lo_create() creates a large
object and returns the OID of the large
object. PostgreSQL access modes
INV_READ
, INV_WRITE
, and
INV_ARCHIVE
are not supported, the
object is created always with both read and write
access. INV_ARCHIVE
has been removed from PostgreSQL itself
(version 6.3 and above).
To use the large object interface, it is necessary to enclose it within a transaction block.
Instead of using the large object interface (which has no access controls and is cumbersome to use), try PostgreSQL's bytea column type and pg_escape_bytea().
Зауваження:
This function used to be called pg_locreate().
connection
Примірник
PgSql\Connection. Якщо параметр
connection
не визначено, то виконується стандартне
з'єднання, тобто останнє, виконане функцією pg_connect()
або pg_pconnect().
Починаючи з PHP 8.1.0, використання стандартного з'єднання є застарілим.
object_id
If an object_id
is given the function
will try to create a large object with this id, else a free
object id is assigned by the server. The parameter
relies on functionality that first
appeared in PostgreSQL 8.1.
A large object OID, або false
в разі помилки.
Версія | Опис |
---|---|
8.1.0 |
Тепер параметр connection має бути примірником
PgSql\Connection. Раніше очікувався resource.
|
Приклад #1 pg_lo_create() example
<?php
$database = pg_connect("dbname=jacarta");
pg_query($database, "begin");
$oid = pg_lo_create($database);
echo "$oid\n";
$handle = pg_lo_open($database, $oid, "w");
echo "$handle\n";
pg_lo_write($handle, "large object data");
pg_lo_close($handle);
pg_query($database, "commit");
?>