pg_lo_create

(PHP 4 >= 4.2.0, PHP 5, PHP 7)

pg_lo_create — Create a large object

Description

pg_lo_create ([ resource $connection [, mixed $object_id ]] ) : int

pg_lo_create ( mixed $object_id ) : int

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().

Note:
This function used to be called pg_locreate().

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Parameters

connection: PostgreSQL database connection resource. When connection is not present, the default connection is used. The default connection is the last connection made by pg_connect() or pg_pconnect().
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 was added in PHP 5.3 and relies on functionality that first appeared in PostgreSQL 8.1.

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Return Values

A large object OID or FALSE on error.

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Changelog

Version	Description
5.3.0	The optional `object_id` was added.

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Examples

Example #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");
?>

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Document created the 30/01/2003, last modified the 26/10/2018
Source of the printed document:https://www.gaudry.be/en/php-rf-function.pg-lo-create.html

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References

Manuel PHP : http://php.net

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