PHP Manualen
forrige |  | næste

# mysqli_data_seek

(PHP 5)

mysqli_data_seek

(no version information, might be only in CVS)

result->data_seek -- Adjusts the result pointer to an arbitary row in the result

## Description

Procedural style:

bool mysqli_data_seek ( mysqli_result result, int offset )

Object oriented style (method):

class mysqli_result {
bool data_seek ( int offset )
}

The mysqli_data_seek() function seeks to an arbitrary result pointer specified by the offset in the result set represented by result. The offset parameter must be between zero and the total number of rows minus one (0..mysqli_num_rows() - 1).

> Bemærk: This function can only be used with buffered results attained from the use of the mysqli_store_result() or mysqli_query() functions.

## Returneringsværdier

Returnerer `TRUE` ved succes, `FALSE` ved fejl.

## Se også

mysqli_store_result(), mysqli_fetch_row(), mysqli_fetch_array(), mysqli_fetch_assoc(), mysqli_fetch_object(), mysqli_query() og mysqli_num_rows().

## Eksempler

Eksempel 1. Object oriented style

`<?php
/* Open a connection */
$mysqli = new mysqli("localhost", "my_user", "my_password", "world");
/* check connection */
if (mysqli_connect_errno()) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT Name, CountryCode FROM City ORDER BY Name";
if ($result = $mysqli->query( $query)) {
/* seek to row no. 400 */
$result->data_seek(399);
/* fetch row */
$row = $result->fetch_row();
printf ("City: %s Countrycode: %s\n", $row[0], $row[1]);
/* free result set*/
$result->close();
}
/* close connection */
$mysqli->close();
?>`

Eksempel 2. Procedural style

`<?php
/* Open a connection */
$link = mysqli_connect("localhost", "my_user", "my_password", "world");
/* check connection */
if (!$link) {
printf("Connect failed: %s\n", mysqli_connect_error());
exit();
}
$query = "SELECT Name, CountryCode FROM City ORDER BY Name";
if ($result = mysqli_query($link, $query)) {
/* seek to row no. 400 */
mysqli_data_seek($result, 399);
/* fetch row */
$row = mysqli_fetch_row($result);
printf ("City: %s Countrycode: %s\n", $row[0], $row[1]);
/* free result set*/
mysqli_free_result($result);
}
/* close connection */
mysqli_close($link);
?>`

Ovenstående eksempel vil udskrive:

    City: Benin City  Countrycode: NGA

forrige | hjem | næste
mysqli_connect | op | mysqli_debug