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pg_lo_tell

PHP function Edit on GitHub ✎

(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)

Returns current seek position a of large object

Description

pg_lo_tell(PgSql\Lob $lob): int

pg_lo_tell() 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

lob: Lob

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.

Changelog

Version	Description

Examples

pg_lo_tell() example

php

<?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:

output

Seek position is: 50000