(PHP 4 >= 4.2.0, PHP 5, PHP 7)
Write to a large object
int pg_lo_write ( resource $large_object, string $data [, int $len ] )
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 of data
, only len
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 of data
.
Returns:
The number of bytes written to the large object, or FALSE
on error.
Examples:
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"); ?>
See also:
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