public function isFree(DateTimeInterface $start, DatetimeInterface $end)
    {
        foreach ($this->select('FREEBUSY') as $freebusy) {
            // We are only interested in FBTYPE=BUSY (the default),
            // FBTYPE=BUSY-TENTATIVE or FBTYPE=BUSY-UNAVAILABLE.
            if (isset($freebusy['FBTYPE']) && 'BUSY' !== strtoupper(substr((string) $freebusy['FBTYPE'], 0, 4))) {
                continue;
            }

            // The freebusy component can hold more than 1 value, separated by
            // commas.
            $periods = explode(',', (string) $freebusy);

            foreach ($periods as $period) {
                // Every period is formatted as [start]/[end]. The start is an
                // absolute UTC time, the end may be an absolute UTC time, or
                // duration (relative) value.
                list($busyStart, $busyEnd) = explode('/', $period);

                $busyStart = VObject\DateTimeParser::parse($busyStart);
                $busyEnd = VObject\DateTimeParser::parse($busyEnd);
                if ($busyEnd instanceof \DateInterval) {
                    $busyEnd = $busyStart->add($busyEnd);
                }

                if ($start < $busyEnd && $end > $busyStart) {
                    return false;
                }
            }
        }

        return true;
    }
public function isFree(DateTimeInterface $start, DatetimeInterface $end)
    {
        foreach ($this->select('FREEBUSY') as $freebusy) {
            // We are only interested in FBTYPE=BUSY (the default),
            // FBTYPE=BUSY-TENTATIVE or FBTYPE=BUSY-UNAVAILABLE.
            if (isset($freebusy['FBTYPE']) && 'BUSY' !== strtoupper(substr((string) $freebusy['FBTYPE'], 0, 4))) {
                continue;
            }

            // The freebusy component can hold more than 1 value, separated by
            // commas.
            $periods = explode(',', (string) $freebusy);

            foreach ($periods as $period) {
                // Every period is formatted as [start]/[end]. The start is an
                // absolute UTC time, the end may be an absolute UTC time, or
                // duration (relative) value.
                list($busyStart, $busyEnd) = explode('/', $period);

                $busyStart = VObject\DateTimeParser::parse($busyStart);
                $busyEnd = VObject\DateTimeParser::parse($busyEnd);
                if ($busyEnd instanceof \DateInterval) {
                    $busyEnd = $busyStart->add($busyEnd);
                }

                if ($start < $busyEnd && $end > $busyStart) {
                    return false;
                }
            }
        }

        return true;
    }
public function isFree ( DateTimeInterface $ start , DatetimeInterface $ end ) { foreach ( $ this -> select ( 'FREEBUSY' ) as $ freebusy ) { // We are only interested in FBTYPE=BUSY (the default), // FBTYPE=BUSY-TENTATIVE or FBTYPE=BUSY-UNAVAILABLE. if ( isset ( $ freebusy [ 'FBTYPE' ] ) && 'BUSY' !== strtoupper ( substr ( ( string ) $ freebusy [ 'FBTYPE' ] , 0 , 4 ) ) ) { continue ; } // The freebusy component can hold more than 1 value, separated by // commas. $ periods = explode ( ',' , ( string ) $ freebusy ) ; foreach ( $ periods as $ period ) { // Every period is formatted as [start]/[end]. The start is an // absolute UTC time, the end may be an absolute UTC time, or // duration (relative) value. list ( $ busyStart , $ busyEnd ) = explode ( '/' , $ period ) ; $ busyStart = VObject \ DateTimeParser :: parse ( $ busyStart ) ; $ busyEnd = VObject \ DateTimeParser :: parse ( $ busyEnd ) ; if ( $ busyEnd instanceof \ DateInterval ) { $ busyEnd = $ busyStart -> add ( $ busyEnd ) ; } if ( $ start < $ busyEnd && $ end > $ busyStart ) { return false ; } } } return true ; }
Checks based on the contained FREEBUSY information, if a timeslot is
available.

@param DateTimeInterface $start
@param DateTimeInterface $end

@return bool
Checks based on the contained FREEBUSY information if a timeslot is available .