在空闲时段添加休息时间

Question

PHP free time blocks from start and end dates

我试图纯粹从答案中获得这些空闲时间块，代码工作正常，但我无法构造中断（到可用时隙的间隔时间）。

按照此答案，我在将30分钟的休息时间添加到可用插槽时遇到问题。 30分钟后可以使用下一个广告位。 上面的方法返回类似，

上午10:00-上午10:30

上午10:30-上午11:00

上午11:00-上午11:30

11:30 AM-12:00 PM

预期结果为

上午10:00-上午10:30

上午10:45-上午11:15

11:30 AM-12:00 PM

我想在每个时隙开始时添加休息时间。

$meeting = array(array('start' => '2016-11-14 16:00:00',
                       'end'   => '2016-11-14 16:30:00'
                      ),
                 array('start' => '2016-11-14 16:45:00',
                       'end'   => '2016-11-14 20:00:00'
                      ),
                 array('start' => '2016-11-14 14:00:00',
                       'end'   => '2016-11-14 15:00:00'
                      ),
                 array('start' => '2016-11-14 13:00:00',
                       'end'   => '2016-11-14 14:00:00'
                      ),
                 array('start' => '2016-11-11 15:20:00',
                       'end'   => '2016-11-11 16:00:00'
                      ),
                 array('start' => '2016-11-11 14:00:00',
                       'end'   => '2016-11-11 15:00:00'
                      ),
                 array('start' => '2016-11-07 07:00:00',
                       'end'   => '2016-11-09 15:00:00'
                      )
               );
$min = "09:00:00";
$max = "17:00:00";
$start = "2030-01-01 00:00:00";
$end = "2000-01-01 00:00:00";
$free = [['start' => "2000-01-01 00:00:00", 'end' => "2030-01-01 00:00:00"]];
foreach($meeting as $m){
    foreach($free as $k=>$f){
        if($m['start']>$f['start'] && $m['start']<=$f['end']){
            $free[$k]['end'] = $m['start'];
            if($m['end']<$f['end'])
                $free[] = ['start'=>$m['end'], 'end'=>$f['end']];
        }
        elseif($m['end']<$f['end'] && $m['end']>$f['start']){
            $free[$k]['start'] = $m['end'];
        }
    }
    $start = min($start,$m['start']);
    $end = max($end,$m['end']);
}
$begin = new DateTime( $start );
$end = new DateTime( $end );

$interval = DateInterval::createFromDateString('1 day');
$period = new DatePeriod($begin, $interval, $end);

$daily_free = [];
foreach ( $period as $dt ){
    $m = [
        'start'=>date('Y-m-d ',strtotime($dt->format('Y-m-d').' -1 day')).$max,
        'end'=>$dt->format('Y-m-d ').$min
    ];
    foreach($free as $k=>$f){
        if($m['start']>$f['start'] && $m['start']<=$f['end']){
            $free[$k]['end'] = $m['start'];
            if($m['end']<$f['end'])
                $free[] = ['start'=>$m['end'], 'end'=>$f['end']];
        }
        elseif($m['end']<$f['end'] && $m['end']>$f['start']){
            $free[$k]['start'] = $m['end'];
        }
    }
}
foreach($free as $k=>$f){
    $s = explode(" ",$f['start']);
    $e = explode(" ",$f['end']);
    if($s[0] == $e[0]){
        $daily_free[$s[0]][] = ['start_free'=>$s[1], 'end_free'=>$e[1]];
    }
}