MySQL函数库：mysql_data_seek

mysql_data_seek

(PHP3 , PHP4)

mysql_data_seek ---&">nbsp; 移动内部指标

语法 : int mysql_data_seek (int result_identifier, int row_number)

说明 :

成功则传回true，失败则传回false。

mysql_data_seek( )移动MySQL内部的列指标到指定列的数目，之后以呼叫mysql_fetch_row( )将会传回此列。

row_number起始值为0。

Example :

<?php

$link = mysql_pconnect ("kron", "jutta", "geheim") or die ("Could not connect");

mysql_select_db ("samp_db") or die ("Could not select database");

$query = "SELECT last_name, first_name FROM friends";

$result = mysql_query ($query) or die ("Query failed");

# fetch rows in reverse order

for ($i = mysql_num_rows ($result) - 1; $i >=0; $i--) {

if (!mysql_data_seek ($result, $i)) {

printf ("Cannot seek to row %d\n", $i); continue;

}

if(!($row = mysql_fetch_object ($result)))

continue;

printf ("%s %s<BR>\n", $row->last_name, $row->first_name);

}

mysql_free_result ($result);

?>