Online PHP editor | output for ueF2O

@ 2021-07-12T04:15:04Z

<?php

$dates = [
'2021-07-05',
'2021-07-06',
'2021-07-07',
'2021-07-08',
'2021-07-09',
'2021-07-10',
'2021-07-11',
'2021-07-12',
'2021-07-13',
'2021-07-14',
'2021-07-15',
'2021-07-16',
'2021-07-17',
'2021-07-18',
'2021-07-19',
'2021-07-20',
'2021-07-21',
'2021-07-22',
];

$from = $dates[0];
$to = $from;
$result = [];

foreach($dates as $date) {
    if (strtotime($from) + 60 * 60 * 24 * 6 < strtotime($date)) {
        $result[] = ['from' => $from, 'to' => $to];
        $from = $to;
    }
    $to = $date;
}
$result[] = ['from' => $from, 'to' => $to];

print_r($result);

Output for 7.3.0 - 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 - 8.3.4, 8.3.6: Array ( [0] => Array ( [from] => 2021-07-05 [to] => 2021-07-11 ) [1] => Array ( [from] => 2021-07-11 [to] => 2021-07-17 ) [2] => Array ( [from] => 2021-07-17 [to] => 2021-07-22 ) )
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 Array ( [0] => Array ( [from] => 2021-07-05 [to] => 2021-07-11 ) [1] => Array ( [from] => 2021-07-11 [to] => 2021-07-17 ) [2] => Array ( [from] => 2021-07-17 [to] => 2021-07-22 ) )

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