PHP Multidimensional Array Length

Question

This is a multidimensional PHP array.

$stdnt = array(
    array("Arafat", 12210261, 2.91),
    array("Rafat", 12210262, 2.92),
    array("Marlin", 12210263, 2.93),
    array("Aziz", 12210264, 2.94),
);

I can find out the length of the array. That means

count($stdnt); // output is 4

[
    array("Arafat", 12210261, 2.91),
    array("Rafat", 12210262, 2.92),
    array("Marlin", 12210263, 2.93),
    array("Aziz", 12210264, 2.94)
] ` 

But can't get the internal array length.

How can I ?

Answer 1

If you are assuming the subarrays are all the same length then:

$count = count($stdnt[0]);

If you don't know the keys:

$count = count(reset($stdnt));

To get an array with a separate count of each of the subarrays:

$counts = array_map('count', $stdnt);