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).
Return values
如果成功则返回 TRUE，失败则返回 FALSE。
Example
例子 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();
?>
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例子 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);
?>
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The above examples would produce the following output:
City: Benin City Countrycode: NGA |