Be careful: pg_lo_export() create empty file without "begin"/"end".
See docs: "...it is necessary to enclose it within a transaction block..."
(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
pg_lo_read — Read a large object
pg_lo_read() reads at most
length bytes from a large object and
returns it as a string.
To use the large object interface, it is necessary to enclose it within a transaction block.
Note:
This function used to be called pg_loread().
lobAn PgSql\Lob instance, returned by pg_lo_open().
lengthAn optional maximum number of bytes to return.
| Version | Description |
|---|---|
| 8.1.0 |
The lob parameter expects an PgSql\Lob
instance now; previously, a resource was expected.
|
Example #1 pg_lo_read() example
<?php
$doc_oid = 189762345;
$database = pg_connect("dbname=jacarta");
pg_query($database, "begin");
$handle = pg_lo_open($database, $doc_oid, "r");
$data = pg_lo_read($handle, 50000);
pg_query($database, "commit");
echo $data;
?>Be careful: pg_lo_export() create empty file without "begin"/"end".
See docs: "...it is necessary to enclose it within a transaction block..."