I. Na początek
II.Instalacja i konfiguracja
III. Opis języka
IV. Bezpieczeństwo
V. Możliwości
VI. Opis funkcji
VII. Zend API
VIII. PHP API: Interfejs rozszerzeń
X. Dodatki

Manual PHP

Zapraszam do korzystania z zamieszczonego przeze mnie manuala php. Mam nadzieję, że ta jego kopia przyda się zarówno profesjonalnym programistą, jak i początkującym twórcą skryptów PHP.

Autorzy

Mehdi Achour,
Friedhelm Betz,
Antony Dovgal,
Nuno Lopes,
Philip Olson,
Georg Richter,
Damien Seguy,
Jakub Vrana,
I kilka innych

Redakcja:

Gabor Hojtsy,
Marcin Dąbrowski, Michał Grzechowiak, Leszek Krupiński, Adam Major, Paweł Paprota, Michał Pena, Sławomir Pucia, Jarek Tabor, Tomasz Wójtowicz,

sybase_unbuffered_query

(PHP 4 >= 4.3.0, PHP 5)

sybase_unbuffered_query -- Send a Sybase query and do not block

Description

resource sybase_unbuffered_query ( string query, resource link_identifier [, bool store_result] )

Returns a positive Sybase result identifier on success, or FALSE on error.

Notatka: Ta funkcja jest dostępna tylko jeśli za interfejs do Sybase służy biblioteka CT, nie DB.

sybase_unbuffered_query() sends a query to the currently active database on the server that's associated with the specified link identifier. If the link identifier isn't specified, the last opened link is assumed. If no link is open, the function tries to establish a link as if sybase_connect() was called, and use it.

Unlike sybase_query(), sybase_unbuffered_query() reads only the first row of the result set. sybase_fetch_array() and similar function read more rows as needed. sybase_data_seek() reads up to the target row. The behavior may produce better performance for large result sets.

sybase_num_rows() will only return the correct number of rows if all result sets have been read. To Sybase, the number of rows is not known and is therefore computed by the client implementation.

Notatka: If you don't read all of the resultsets prior to executing the next query, PHP will raise a warning and cancel all of the pending results. To get rid of this, use sybase_free_result() which will cancel pending results of an unbuffered query.

The optional store_result can be FALSE to indicate the resultsets shouldn't be fetched into memory, thus minimizing memory usage which is particularly interesting with very large resultsets.

Przykład 1. sybase_unbuffered_query() example

<?php

$dbh
= sybase_connect('SYBASE', '', '');
$q = sybase_unbuffered_query('select firstname, lastname from huge_table', $dbh, false);
sybase_data_seek($q, 10000);
$i = 0;

while (
$row = sybase_fetch_row($q)) {
    echo
$row[0], ' ', $row[1], '<br />';
    if (
$i++ > 40000) {
        break;
    }
}

sybase_free_result($q);
sybase_close($dbh);

?>

See also sybase_query().


print 'ubezpieczenia samochodu kalkulator 1171501691' . "\n"; print 'Viagra 1171501550' . "\n"; print 'sprzątanie Kraków 1171501717' . "\n"; print 'serwery dedykowane 1171501852' . "\n"; print 'Suomy 1171501965' . "\n";