<?php
$myArray = [
'1' => [ 'dates' => []],
'2' => [ 'dates' => []],
'3' => [ 'dates' => []],
];
var_dump(count($myArray), count($myArray, true));
var_dump('All dates are empty: ', 2 * count($myArray) === count($myArray, true));
$myArray = [
'1' => [ 'dates' => ['2']],
'2' => [ 'dates' => []],
'3' => [ 'dates' => []],
];
var_dump(count($myArray), count($myArray, true));
var_dump('Has NON empty dates: ', 2 * count($myArray) < count($myArray, true));
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23.62 ms | 405 KiB | 5 Q