Function to take a large object size:
<?php
function pg_lo_size ($lo) {
$pos = pg_lo_tell ($lo);
pg_lo_seek ($lo, 0, PGSQL_SEEK_END);
$size = pg_lo_tell ($lo);
pg_lo_seek ($lo, $pos, PGSQL_SEEK_SET);
return $size;
}
?>
pg_lo_tell
(PHP 4 >= 4.2.0, PHP 5, PHP 7, PHP 8)
pg_lo_tell — Returns current seek position a of large object
Descrição
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.
Valor Retornado
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.
Registro de Alterações
| Versão | Descrição |
|---|---|
| 8.1.0 |
O parâmetro lob agora espera uma instância de PgSql\Lob;
anteriormente, um resource era esperado.
|
Exemplos
Exemplo #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");
?>O exemplo acima produzirá:
Seek position is: 50000
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