PG_LO_TELL(3) PG_LO_TELL(3)
pg_lo_tell - Returns current seek position a of large object
SYNOPSIS
int pg_lo_tell (resource $large_object)
DESCRIPTION
pg_lo_tell(3) returns the current position (offset from the beginning) of a large object.
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).
RETURN VALUES
The current seek offset (in number of bytes) from the beginning of the large object. If there is an error, the return value is negative.
EXAMPLES
Example #1
pg_lo_tell(3) example
<?php
$doc_oid = 189762345;
$database = pg_connect("dbname=jacarta");
pg_query($database, "begin");
$handle = pg_lo_open($database, $doc_oid, "r");
// Skip first 50000 bytes
pg_lo_seek($handle, 50000, PGSQL_SEEK_SET);
// See how far we've skipped
$offset = pg_lo_tell($handle);
echo "Seek position is: $offset";
pg_query($database, "commit");
?>
The above example will output:
Seek position is: 50000
CHANGELOG
+--------+---------------------------------------------------+
|Version | |
| | |
| | Description |
| | |
+--------+---------------------------------------------------+
| 5.6.0 | |
| | |
| | Added PostgreSQL 9.3's 64bit large object sup- |
| | port. Both client and server must support Post- |
| | greSQL 9.3 and PHP must be 64bit build to use |
| | 64bit large object. |
| | |
+--------+---------------------------------------------------+
SEE ALSO
pg_lo_seek(3).
PHP Documentation Group PG_LO_TELL(3)
