php 数组如何修改值

<?php
//声明一个多数据类型的多维数组
$data = array( 'hello', 2008, array(8,'NBA'), 5 );
//输出原数组
print_r($data); echo "<hr>";
//修改下标为0的元素的值
$data[0] = 'hello world';
//修改下标为2的元素中下标为1的元素的值
$data[2][1] = 'FIFA';
//输出修改后整个数组的结构
print_r("新数组: ".$data);
?>

Array ( [0] => hello [1] => 2008 [2] => Array ( [0] => 8 [1] => NBA ) [3] => 5 )
Array ( [0] => hello world [1] => 2008 [2] => Array ( [0] => 8 [1] => FIFA ) [3] => 5 )