PHP マニュアル
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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 ( object result, int offset)

Object oriented style (method):

class 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).

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

## Return values

成功した場合に `TRUE` 、失敗した場合に `FALSE` を返します。

## See also

mysqli_store_result(), mysqli_fetch_row(), mysqli_num_rows().

## Example

例 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();
?>`

例 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);
?>`

The above examples would produce the following output:

    City: Benin City  Countrycode: NGA

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