(PHP 5)
mysqli_result::data_seek -- mysqli_data_seek — Adjusts the result pointer to an arbitrary row in the result
Stile orientato agli oggetti
$offset
)Stile procedurale
The mysqli_data_seek() function seeks to an arbitrary
result pointer specified by the offset in the
result set.
resultSolo nello stile procedurale: un identificatore di resultset restituito da mysqli_query(), mysqli_store_result() o mysqli_use_result().
offset
The field offset. Must be between zero and the total number of rows minus one (0.. mysqli_num_rows() - 1).
Restituisce TRUE in caso di successo, FALSE in caso di fallimento.
Nota:
This function can only be used with buffered results attained from the use of the mysqli_store_result() or mysqli_query() functions.
Example #1 Stile orientato agli oggetti
<?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();
?>
Example #2 Stile procedurale
<?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);
?>
I precedenti esempi visualizzeranno:
City: Benin City Countrycode: NGA