<?php
$data = array(
'2021-08-31' => array( 'country_id' => array( '191' => array( '20098' ) ) ),
'2021-08-18' => array( 'country_id' => array( '214' => array( '14876' ) ) ),
'2021-07-12' => array( 'country_id' => array( '103' => array( '19709' ) ) ),
'2021-07-07' => array( 'country_id' => array( '206' => array( '9568' ) ) ),
'2021-06-28' => array( 'country_id' => array( '246' => array( '19561' ), '132' => array( '19277' ), '1' => array( '2816' ), '83' => array( '19530' ), '21' => array('3340'), '202' => array( '14136' ), '103' => array( '17006' ) ) ),
'2021-06-25' => array( 'country_id' => array( '99' => array( '14561' ), '102' => array( '26789' ), '21' => array( '7690' ), '210' => array( '242325' ), '11' => array('436432'), '999' => array( '43734' ), '768' => array( '34437' ) ) ),);
// set your slice with start and end
$start = 3;
$end = 9;
$count = 0;
$store = []; // the result store
foreach($data as $date => $record) {
foreach($record['country_id'] as $k => $countryIds) {
foreach($countryIds as $id) {
$count++;
if($count >= $start && $count <= $end) $store[$date]['country_id'][$k] = $countryIds;
}
}
}
print_r($store);
preferences:
58.11 ms | 402 KiB | 5 Q