この配列の結合の問題を解決するのを手伝ってください

$arr = array(	array('id'=>1,'name'=>'zhangsan','sex'=>'n'),	array('id'=>2,'name'=>'lisi','sex'=>'v'),	array('id'=>3,'name'=>'wangwu','sex'=>'n'),	array('id'=>4,'name'=>'zhaoliu','sex'=>'v'),	array('id'=>5,'name'=>'xiaoqi','sex'=>'n'));$arr1 = array(	array('id'=>3,'age'=>'20'),	array('id'=>5,'age'=>'21'),	array('id'=>6,'age'=>'30'));

$arr = array(	array('id'=>3,'name'=>'wangwu','sex'=>'n','age'=>'20'),	array('id'=>5,'name'=>'xiaoqi','sex'=>'n','age'=>'21'));