Online PHP editor | rfc for CDi7g

@ 2021-09-20T14:58:10Z

<?php

$openTimeslots = ['02-09-2021' => [ '8:00-10:00', '16:00-19:00'],
                  '03-09-2021' => [ '7:00-10:00', '16:15-19:00',
                                   '14:00-16:00', '13:00-14:15'],
                  '04-09-2021' => [ '7:15-10:00', '15:15-18:15',
                                   '18:30-18:45']];

function intersectTimeslots($timeslots1, $timeslots2)
{
    $newTimeslots = [];
    foreach ($timeslots1 as $timeslot1) {
        [$start1, $finish1] = sscanf(str_replace(':', '', $timeslot1), "%d-%d");
        foreach ($timeslots2 as $timeslot2) {
            [$start2, $finish2] = sscanf(str_replace(':', '', $timeslot2), "%d-%d");
            $newStart = max($start1, $start2);
            $newFinish = min($finish1, $finish2);
            if ($newStart < $newFinish) {
               $newTimeslots[] = substr_replace($newStart, ':', -2, 0) . '-' . 
                                 substr_replace($newFinish, ':', -2, 0);
            }
        }
    }
    return $newTimeslots;
}

$commonTimeslots = array_shift($openTimeslots);

foreach ($openTimeslots as $timeslots) {
   $commonTimeslots = intersectTimeslots($commonTimeslots, $timeslots);
}

var_export($commonTimeslots);

Output for git.master, git.master_jit, rfc.property-hooks: array ( 0 => '8:00-10:00', 1 => '16:15-18:15', 2 => '18:30-18:45', )

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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