(PHP 4 >= 4.2.0, PHP 5)
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().
Note:
This function used to be called pg_locreate().
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.
      
   A large object OID or FALSE on error.
  
| Version | Description | 
|---|---|
| 5.3.0 | 
        The optional  | 
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");
?>