多维数组如何赋值？？？

[xiaoyucn]

//通过循环为数组赋值
for ($i=0;$i<6;$i++) {
$tid=$i;
$fid=$i+1;
$bbspicarray = array("tid" => array ($tid),"fid" => array ($fid));

}

//如何使上面的循环赋值达到下面的赋值效果？
$bbspicarray = array("tid" => array ('0','1','2','3','4','5'),"fid" => array ('1','2','3','4','5','6'));


请大家帮忙，多谢了！

[coolstr]

for ($i=0;$i<6;$i++) {
$bbspicarray['tid'][] = $i;
$bbspicarray['fid'][] = $i+1;
}
print_r($bbspicarray);

[xuzuning]

for ($i=0;$i<6;$i++) {
$tid=$i;
$fid=$i+1;
$bbspicarray['tid'][] = $tid;
$bbspicarray['fid'][] = $fid;
}