Online PHP editor | output for gHDC0

@ 2018-06-06T06:45:31Z

<?php

$arr = ["01/06/18", "02/06/18", "03/06/18",
"11/06/18","12/06/18", "13/06/18", "14/06/18", "15/06/18","16/06/18",
"20/06/18"];

$i =-1;
$prev =0;
$format = "d/m/y";

Foreach($arr as $val){
    $dt = date_create_from_format ($format , $val);
    $unix = date_timestamp_get($dt);

    If($unix -$prev > 86400){
        $i++;
    }
    $res[$i][] = $unix;
    $prev = $unix;
}

Foreach($res as $period){
    If(count($period) >1){
        $periods[] = date($format, min($period)) . " - " . date($format, max($period));
    }Else{
        $periods[] = date($format, min($period));
    }
}
Var_dump($periods);

Output for 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.28, 8.4.1 - 8.4.14, 8.5.0 - 8.5.1: array(3) { [0]=> string(19) "01/06/18 - 03/06/18" [1]=> string(19) "11/06/18 - 16/06/18" [2]=> string(8) "20/06/18" }
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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