PHP kézikönyv
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# 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).

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

## Visszatérési értékek

Siker esetén `TRUE` értékkel tér vissza, ellenkező esetben `FALSE` értéket ad.

## Lásd még

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

## Példák

Példa 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();
?>`

Példa 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);
?>`

A fenti példa a következő kimenetet adja:

    City: Benin City  Countrycode: NGA

Előző | Tartalom | Következő
mysqli_connect | Fel | mysqli_debug