list($a, , $c) = $my_array;

<?php
header("Content-type: text/html; charset=utf-8");
$my_array = array("Dog","Cat","Horse");

list($a, , $c) = $my_array;
echo "我在这里只用了 $a 和 $c 变量。<br>";

list($a,$b) = $my_array;
echo "$a,$b <br>";

list($a,$b,$c,$d) = $my_array;
echo "$a,$b,$c,$d <br>";

?>

我在这里只用了 Dog 和 Horse 变量。
Dog,Cat 

( ! ) Notice: Undefined offset: 3 in D:\workspace\php\hellophp\list_array2.php on line 11
Call Stack
#	Time	Memory	Function	Location
1	0.0150	148040	{main}( )	..\list_array2.php:0

Dog,Cat,Horse,