Php/docs/function.pg-lo-write
pg_lo_write
(PHP 4 >= 4.2.0, PHP 5, PHP 7)
pg_lo_write — Write to a large object
Description
pg_lo_write
( resource $large_object
, string $data
[, int $len
] ) : int
pg_lo_write() writes data into a large object at the current seek position.
To use the large object interface, it is necessary to enclose it within a transaction block.
Note:
This function used to be called pg_lowrite().
Parameters
large_object
- PostgreSQL large object (LOB) resource, returned by pg_lo_open().
data
- The data to be written to the large object. If
len
is specified and is less than the length ofdata
, onlylen
bytes will be written. len
- An optional maximum number of bytes to write. Must be greater than zero and no greater than the length of
data
. Defaults to the length ofdata
.
Return Values
The number of bytes written to the large object, or FALSE
on error.
Examples
Example #1 pg_lo_write() example
<?php $doc_oid = 189762345; $data = "This will overwrite the start of the large object."; $database = pg_connect("dbname=jacarta"); pg_query($database, "begin"); $handle = pg_lo_open($database, $doc_oid, "w"); $data = pg_lo_write($handle, $data); pg_query($database, "commit");?>