php 用给定的值填充数组| 使用指定的键和值填充数组

 
$ary[0] = array(0=>0, 1=>1, 2=>2, 3=>3);
$ary 	= array_fill(0,count($ary[0]), 0);
//$ary[0] = array('a'=>0, 'b'=>1, 'c'=>2, 'd'=>3);
//$ary 	= array_fill_keys(array_keys($ary[0]), '0');