fbsql_data_seek Move internal result pointer

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: 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
", $i);
        continue;
    }

    if (!($row = fbsql_fetch_object($result)))
        continue;

    echo $row->last_name . $row->first_name . "<br />
";
}

fbsql_free_result($result);
?>