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PG_LO_TRUNCATE(3) PG_LO_TRUNCATE(3)
pg_lo_truncate - Truncates a large object
SYNOPSIS
bool pg_lo_truncate (resource $large_object, int $size)
DESCRIPTION
pg_lo_truncate(3) truncates a large object resource.
To use the large object interface, it is necessary to enclose it within a transaction block.
PARAMETERS
o $large_object
- PostgreSQL large object (LOB) resource, returned by pg_lo_open(3).
o $size
- The number of bytes to truncate.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
pg_lo_truncate(3) example
<?php
$doc_oid = 189762345;
$database = pg_connect("dbname=jacarta");
pg_query($database, "begin");
$handle = pg_lo_open($database, $doc_oid, "r");
// Truncate to 0
pg_lo_truncate($handle, 0);
pg_query($database, "commit");
echo $data;
?>
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.6.0 | |
| | |
| | Added truncate function. It supports PostgreSQL |
| | 9.3's 64bit large object. Both client and server |
| | must support PostgreSQL 9.3 and PHP must be 64bit |
| | build to use 64bit large object. |
| | |
+--------+---------------------------------------------------+
SEE ALSO
pg_lo_tell(3).
PHP Documentation Group PG_LO_TRUNCATE(3)