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"calendar/icsfile": "dev-master"
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<?php
/*
 * Variables used in this script:
 * $summary     - text title of the event
 * $dateStart   - the starting date (in seconds since unix epoch)
 * $dateEnd     - the ending date (in seconds since unix epoch)
 * $address     - the event's address
 * $description - text description of the event
 * $filename    - the name of this file for saving (e.g. my-event-name.ics)
 */
namespace ical;
class ical {
    private $name;
    private $timezoneICal = 'Europe/Paris';
    private $dateStart;
    private $summary;
    private $dateEnd;
    private $filename;
    private $address;
    private $description;
    private $alarm        = FALSE;
    private $repeat       = FALSE;
    
    public function getName() {
        return $this->name;
    }
    public function getTimezoneICal() {
        return $this->timezoneICal;
    }
    public function getDateStart() {
        return $this->dateStart;
    }
    public function getSummary() {
        return $this->summary;
    }
    public function getDateEnd() {
        return $this->dateEnd;
    }
    public function getFilename() {
        return $this->filename;
    }
    public function getAddress() {
        return $this->address;
    }
    public function getDescription() {
        return $this->description;
    }
    public function getAlarm() {
        return $this->alarm;
    }
    public function getRepeat() {
        return $this->repeat;
    }
    public function setName($name) {
        $this->name = $name;
        return $this;
    }
   
    public function setTimezoneICal($timezoneICal) {
        $this->timezoneICal = $timezoneICal;
        return $this;
    }
    public function setDateStart($dateStart) {
        $this->dateStart = $this->_dateToCal($this->_human_to_unix($dateStart));
        return $this;
    }
    public function setSummary($summary) {
        $this->summary = $summary;
        return $this;
    }
    public function setDateEnd($dateEnd) {
        $this->dateEnd = $this->_dateToCal($this->_human_to_unix($dateEnd));
        return $this;
    }
    public function setFilename($filename) {
        $this->filename = $filename;
        return $this;
    }
    public function setAddress($address) {
        $this->address = $address;
        return $this;
    }
    public function setDescription($description) {
        $this->description = $description;
        return $this;
    }
    public function setAlarm($alarm) {
        if (is_int($alarm)) {
            $this->alarm = $alarm;
            return $this;
        } else {
            throw new \Exception(__CLASS__ . " : It's not an integer", 01);
        }
    }
    public function setRepeat($repeat) {
        $this->repeat = $repeat;
        return $this;
    }
    /**
     * @name getICAL()
     * @access public
     * @return string $iCal
     */
    public function getICAL() {
        $iCal = "BEGIN:VCALENDAR" . "\r\n";
        $iCal .= 'VERSION:2.0' . "\r\n";
        $iCal .= "PRODID:" . $this->getName() . "\r\n";
        $iCal .= "CALSCALE:GREGORIAN " . "\r\n";
        $iCal .= "BEGIN:VEVENT" . "\r\n";
        $iCal .= "DTSTART:" . $this->getDateStart() . "\r\n";
        $iCal .= "DTEND:" . $this->getDateEnd() . "\r\n";
        $iCal .= "SUMMARY:" . $this->_escapeString($this->getSummary()) . "\r\n";
        $iCal .= 'UID:' . uniqid() . "\r\n";
        $iCal .= 'LOCATION: ' . $this->_escapeString($this->getAddress()) . "\r\n";
        $iCal .= 'DESCRIPTION:' . $this->_escapeString($this->getDescription()) . "\r\n";
        if ($this->getAlarm()) {
            $iCal .= 'BEGIN:VALARM' . "\r\n";
            $iCal .= 'ACTION:DISPLAY' . "\r\n";
            $iCal .= 'DESCRIPTION:Reminder' . "\r\n";
            $iCal .= 'TRIGGER:-PT' . $this->getAlarm() . 'M' . "\r\n";
            if ($this->getRepeat()) {
                $iCal .= 'REPEAT:' . $this->getRepeat() . "\r\n";
            }
            $iCal .= "END:VALARM" . "\r\n";
        }
        $iCal .= 'END:VEVENT' . "\r\n";
        $iCal .= 'END:VCALENDAR' . "\r\n";
        return $iCal;
    }
    /**
     * @name _dateToCal()
     * @access private
     * @param string $timestamp
     * @return string
     */
    private function _dateToCal($timestamp) {
        return date('Ymd\THis\Z', $timestamp);
    }
    /**
     * @name _escapeString()
     * @abstract Escapes a string of characters
     * @param string $string
     * @return string
     */
    private function _escapeString($string) {
        return preg_replace('/([\,;])/', '\\\$1', $string);
    }
    /**
     * @name $setHeader();
     */
    public function setHeader() {
        header('Content-type: text/calendar; charset=utf-8');
        header('Content-Disposition: attachment; filename=' . $this->getFilename() . '.ics');
    }
    /**
     * @name _human_to_unix()
     * @desciption this function is from codeigniter frameWork
     * @param string $datestr
     * @return boolean
     */
    private function _human_to_unix($datestr) {
        $datestr = preg_replace("/\040+/", ' ', trim($datestr));
        if (!preg_match('/^[0-9]{2,4}\-[0-9]{1,2}\-[0-9]{1,2}\s[0-9]{1,2}:[0-9]{1,2}(?::[0-9]{1,2})?(?:\s[AP]M)?$/i', $datestr)) {
            throw new \Exception(__CLASS__ . " : bad" . $datestr);
        }
        $split = explode(' ', $datestr);
        $ex = explode("-", $split['0']);
        $year  = (strlen($ex['0']) == 2) ? '20' . $ex['0'] : $ex['0'];
        $month = (strlen($ex['1']) == 1) ? '0' . $ex['1'] : $ex['1'];
        $day   = (strlen($ex['2']) == 1) ? '0' . $ex['2'] : $ex['2'];
        $ex = explode(":", $split['1']);
        $hour = (strlen($ex['0']) == 1) ? '0' . $ex['0'] : $ex['0'];
        $min  = (strlen($ex['1']) == 1) ? '0' . $ex['1'] : $ex['1'];
        if (isset($ex['2']) && preg_match('/[0-9]{1,2}/', $ex['2'])) {
            $sec = (strlen($ex['2']) == 1) ? '0' . $ex['2'] : $ex['2'];
        } else {
            // Unless specified, seconds get set to zero.
            $sec = '00';
        }
        if (isset($split['2'])) {
            $ampm = strtolower($split['2']);
            if (substr($ampm, 0, 1) == 'p' AND $hour < 12)
                $hour = $hour + 12;
            if (substr($ampm, 0, 1) == 'a' AND $hour == 12)
                $hour = '00';
            if (strlen($hour) == 1)
                $hour = '0' . $hour;
        }
        return mktime($hour, $min, $sec, $month, $day, $year);
    }
}
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 <?php      
 require_once 'vendor/autoload.php';
    use ical\ical;
try {
 
        $ical = new ical();
        $ical->setAddress('Paris');
        $ical->setDateStart('2014-11-21 15:00:00');
        $ical->setDateEnd('2014-11-21 16:00:00');
        $ical->setDescription('wonder description');
        $ical->setSummary('Running');
        $ical->setFilename(uniqid());
        $ical->setHeader();
       
    echo $ical->getICAL();
            
  
        } catch (Exception $exc) {
            echo $exc->getMessage();
}
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