数组中的长度数组

Question

如果我有这样的数组:

$array = array(
     1,
     2,
     3,
     ["thing1", "thing2", "thing3"]
);

如何检查数组中数组的长度(["thing1","thing2","thing3"])？

Answer 1

您可以使用Array Count函数 count或sizeof函数.

尝试以下代码:

$array = array(
    1,
    2,
    3,
    ["thing1", "thing2", "thing3"]
);

echo count($array[3]); //out put 3
echo sizeof($array[3]); //out put 3