fbsql_data_seek
(PHP 4 >= 4.0.6, PHP 5)
fbsql_data_seek — Move internal result pointer
说明
bool fbsql_data_seek
( resource $result
, int $row_number
)
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
-
A result identifier returned by fbsql_query() or fbsql_db_query().
- row_number
-
The row number. Starts at 0.
返回值
如果成功则返回 TRUE，失败则返回 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);
?>
CDN