PHP关联数组,获取最大项数
我有一个数组,看起来像这样:PHP关联数组,获取最大项数,php,arrays,Php,Arrays,我有一个数组,看起来像这样: Array ( [A] => Array ( [A] => Array ( [01] => Array ( [01] => Array (
Array
(
[A] => Array
(
[A] => Array
(
[01] => Array
(
[01] => Array
(
[0] => 01
[1] => 02
)
[02] => Array
(
[0] => 01
[1] => 02
[2] => 03
[3] => 04
[4] => 05
)
我正在查看最后一级数组,即:[A']['A']['01']['01']x和['A']['A']['01']['02']x
在这个级别上,在上面的示例中,01有2个项目,02有5个项目,03可以有4个项目,以此类推
我想知道,在不遍历所有项的情况下,最大项数是多少,即:在本例中,最大项数是5(不是值05,而是数组中此级别的项数)试试看
$max = max(array_map(function($_){return count($_);},$Array['A']['A']['01']));
测试脚本
count($array['A']['A']['01']['02'])代码>可能是重复的,谢谢你的信息!我到处搜索,但没有找到我要找的东西,谢谢你,完美,它也没有让我的脚本慢很多(执行这个代码大约4500次,增加了2秒的总页面加载时间)
[akshay@localhost tmp]$ cat test.php
<?php
$Array = array("A"=>array("A"=>array(
"01"=>array(
"01"=>array('01','02'),
"02"=>array('01','02','03','04','05')
)
)));
// Input
print_r($Array);
$max = max(array_map(function($_){return count($_);},$Array['A']['A']['01']));
// Output
echo $max.PHP_EOL;
?>
[akshay@localhost tmp]$ php test.php
Array
(
[A] => Array
(
[A] => Array
(
[01] => Array
(
[01] => Array
(
[0] => 01
[1] => 02
)
[02] => Array
(
[0] => 01
[1] => 02
[2] => 03
[3] => 04
[4] => 05
)
)
)
)
)
5