<?php
$arr = [
[
'days' => [
'day_id' => '2016-11-23,2016-11-24',
],
],
[
'days' => [
'day_id' => '2016-11-25,',
],
],
[
'days' => [
'day_id' => '',
],
],
[
'days' => [
'day_id' => '2016-11-27,2016-11-28',
],
],
];
function reduce_func($carry, $item){
if (isset($item['days']) && !empty($item['days']['day_id'])){
$carry += count(array_unique(array_filter(explode(',', $item['days']['day_id']))));
}
return $carry;
}
$result = array_reduce($arr, "reduce_func");
var_dump($result);
- Output for 5.6.0 - 5.6.38, 7.0.0 - 7.0.32, 7.1.0 - 7.1.24, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
- int(5)
preferences:
180.7 ms | 403 KiB | 251 Q