pg_lo_tell

Описание

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.

Список параметров

Возвращаемые значения

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.

Примеры

Пример 1. pg_lo_tell() 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"); ?> Результат выполнения данного примера: Seek position is: 50000

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