fbsql_data_seek()

(PHP 4 >= 4.0.6, PHP 5, PHP 7)

Move internal result pointer

说明

fbsql_data_seek(resource $result,int $row_number): bool

Moves the internal row pointer of the FrontBase result associated with the specified result identifier to point to the specified row number.

The next call to fbsql_fetch_row() would return that row.

参数

$result

由fbsql_query()或fbsql_db_query()返回的结果标识符。

$row_number

The row number. Starts at 0.

返回值

成功时返回TRUE，或者在失败时返回FALSE。

范例

Example #1 fbsql_data_seek() example

<?php
$link = fbsql_pconnect("localhost", "_SYSTEM", "secret")
    or die("Could not connect");
fbsql_select_db("samp_db")
    or die("Could not select database");
$query = "SELECT last_name, first_name FROM friends;";
$result = fbsql_query($query)
    or die("Query failed");
// fetch rows in reverse order
for ($i = fbsql_num_rows($result) - 1; $i >=0; $i--) {
    if (!fbsql_data_seek($result, $i)) {
        printf("Cannot seek to row %d\n", $i);
        continue;
    }
    if (!($row = fbsql_fetch_object($result)))
        continue;
    echo $row->last_name . $row->first_name . "<br />\n";
}
fbsql_free_result($result);
?>