PG_LO_EXPORT(3)PG_LO_EXPORT(3)pg_lo_export - Export a large object to fileSYNOPSIS
bool pg_lo_export ([resource $connection], int $oid, string $pathname)
DESCRIPTION pg_lo_export(3) takes a large object in a PostgreSQL database and saves its contents to a file on the local filesystem.
To use the large object interface, it is necessary to enclose it within a transaction block.
Note
This function used to be called pg_loexport(3).
PARAMETERS
o $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(3) or pg_pconnect(3).
o $oid
- The $OID of the large object in the database.
o $pathname
- The full path and file name of the file in which to write the large object on the client filesystem.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
pg_lo_export(3) example
<?php
$database = pg_connect("dbname=jacarta");
pg_query($database, "begin");
$oid = pg_lo_create($database);
$handle = pg_lo_open($database, $oid, "w");
pg_lo_write($handle, "large object data");
pg_lo_close($handle);
pg_lo_export($database, $oid, '/tmp/lob.dat');
pg_query($database, "commit");
?>
SEE ALSO pg_lo_import(3).
PHP Documentation Group PG_LO_EXPORT(3)
Check Out this Related Man Page
PG_LO_OPEN(3)PG_LO_OPEN(3)pg_lo_open - Open a large objectSYNOPSIS
resource pg_lo_open (resource $connection, int $oid, string $mode)
DESCRIPTION pg_lo_open(3) opens a large object in the database and returns large object resource so that it can be manipulated.
Warning
Do not close the database connection before closing the large object resource.
To use the large object interface, it is necessary to enclose it within a transaction block.
Note
This function used to be called pg_loopen(3).
PARAMETERS
o $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(3) or pg_pconnect(3).
o $oid
- The $OID of the large object in the database.
o $mode
- Can be either "r" for read-only, "w" for write only or "rw" for read and write.
RETURN VALUES
A large object resource or FALSE on error.
EXAMPLES
Example #1
pg_lo_open(3) example
<?php
$database = pg_connect("dbname=jacarta");
pg_query($database, "begin");
$oid = pg_lo_create($database);
echo "$oid
";
$handle = pg_lo_open($database, $oid, "w");
echo "$handle
";
pg_lo_write($handle, "large object data");
pg_lo_close($handle);
pg_query($database, "commit");
?>
SEE ALSO pg_lo_close(3), pg_lo_create(3).
PHP Documentation Group PG_LO_OPEN(3)
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