一个引用 引发的问题

$array = array(1, 2, 3);
foreach ($array as & $item) {
	//echo $item.'<br/>';
}
//print_r( $array );
foreach ($array as $item) {
	print_r( $array );
	echo $item.'<br/>';
}

print_r( $array );

输出结果是

Array ( [0] => 1 [1] => 2 [2] => 1 ) 1

Array ( [0] => 1 [1] => 2 [2] => 2 ) 2

Array ( [0] => 1 [1] => 2 [2] => 2 ) 2

Array ( [0] => 1 [1] => 2 [2] => 2 )

记下 呵呵 以后方便回忆