PHP5 日历 Calendar

superadmin

程序介绍：
This class can be used to display month calendars in HTML tables.

It takes a given month and year and generates an HTML table with the days of that month. The calendar start week day may be set to Sunday or Monday.

Special event days may exhibit the title of the event in the respective calendar table cell.

The class also shows links to pages that display the next and previous months.  

The calendar presentation details can be configured with CSS styles.

The class generates XHTML compliant HTML.




<?php

class calendar {
     
    // Events array
    private $events = array();
    // Defaults for day and month names
    private $dayNames = array ( 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun');



    private $monthNames = array ( 'January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December' );  
    // Defaults for prev and next links
    private $prevMonthNavTxt = '&laquo';
    private $nextMonthNavTxt = '&raquo';
    private $calendarName;

    public function __construct($name='cal') {  
        // Assign name to calendar
        if (strpos($name, ' ') || strpos($name, '_') || is_numeric(substr($name, 0, 1)))  
            throw new exception('Calendar name must be a valid CSS name');
        $this->calendarName = $name;

        // Names for special cases
        $this->markup = array('current_day' => 'current-day',



                                    'last_day_of_week' =>'last-day-of-week',
                                    'prev_month' => 'prev-month-day',
                                    'next_month' => 'next-month-day',  
                                    'event' => 'event',
                                    'header' => 'header',
                                    'nav' => 'nav',


                                    'days_of_week' => 'days-of-week'
                                    );
    }
     
    // Get calendar name
    public function getCalendarName(){
        return $this->calendarName;



    }

    // Set text for previous and next calendar links
    public function setNavigationText($prev, $next) {
        $this->prevMonthNavTxt = $prev;
        $this->nextMonthNavTxt = $next;



    }
    // Get text for previous and next calendar links
    public function getNavigationText() {
        return array(    'prev' => $this->prevMonthNavTxt,
                        'next' => $this->nextMonthNavTxt



                    );
    }

    // Set inner border width. Would be too annoying to do this with CSS
    public function setInnerBorder($size) {
        $this->innerBorder = intval($size);


    }
    // Set inner border width. Would be too annoying to do this with CSS
    public function getInnerBorder($size) {
        return $this->innerBorder;
    }

    // Set the names of the days
    public function setDayNames($array) {  
        if (count($array) == 7)
            $this->dayNames = $array;
        else
            throw new exception ('Invalid value for setDayNames()');
    }



    // Get the names of the days
    public function getDayNames($array) {
        return $this->dayNames;
    }

    // Set the names of the months
    public function setMonthNames($array) {



        if (count($array) == 12)
            $this->monthNames = $array;
        else
            throw new exception ('Invalid value for setMonthNames()');
    }  
    // Set the names of the months
    public function getMonthNames($array) {
        return $this->monthNames;
    }

    // Sets the calendar start day 0=monday, 1=sunday, 2=saturday etc...
    public function setStartDay($day) {


        if (is_int($day) && $day >= 0 && $day <=6) {
            $this->startDay=$day;
            for ($i=0;$i<$day;$i++)



            array_unshift($this->dayNames, array_pop($this->dayNames));
        }
        else
            throw new exception('Invalid value for setStartDay()');
    }  
    // Gets the calendar start day
    public function getStartDay($day) {
        return $this->startDay=$day;
    }

    // Enables prev and next month links
    public function enableNavigation() {  
        $this->enableNav = true;
    }
    // Disables prev and next month links
    public function disableNavigation() {
        $this->enableNav = false;
    }

    // Gets the long name of the current month


    private function getMonthName() {
        return ucwords($this->monthNames[$this->month-1]);
    }
    // Get calendars month 1-12
    private function getMonth() {


        return $this->month;
    }
    // Get calendar year ####
    private function getYear() {
        return $this->year;
    }

    // Enables nicely formatted html instead of just one big line
    public function enablePrettyHTML() {


        $this->prettyHTML = true;
    }
    // Disables nicely formatted html instead of just one big line
    public function disablePrettyHTML() {
        $this->prettyHTML = false;
    }




    // Display the year along side the month
    public function enableYear() {
        $this->displayYear = true;
    }
    // Do not display year near the month
    public function disableYear() {
        $this->displayYear = false;  
    }

    // Enables the displaying of prev and next month's days on the calendar
    public function enableNonMonthDays() {
        $this->displayNonMonthDays = true;
    }
    // Disables the displaying of previous and next month's days on the calendar
    public function disableNonMonthDays() {  
        $this->displayNonMonthDays = false;
    }
     
    // get an event on a given date
    public function getEventByDate($year, $month, $day) {
        if (isset($this->events[$year][$month][$day]))


            return $this->events[$year][$month][$day];
        return FALSE;
    }

    // Add an event
    public function addEvent($eventTitle, $eventYear, $eventMonth, $eventDay, $eventLink) {


        $this->events[$eventYear][$eventMonth][$eventDay] = array(    'event_title' => $eventTitle, 'event_link' => $eventLink);
    }
    public function removeEvent($eventYear, $eventMonth, $eventDay) {  
        unset($this->events[$eventYear][$eventMonth][$eventDay]);
    }

    // Offsets timestamp according to offset and returns the day month or year
    private function timeTravel($offset, $dmy, $timeStamp) {


        $dateVals = array (    'd' => 'j',
                            'm' => 'n',
                            'y' => 'Y'
                            );  
        return date($dateVals[$dmy], strtotime($offset, $timeSTamp));
    }

    // Display calendar.true Supply month and year to override default value of current month
    public function display($month='', $year='') {


     
        // Remove whitespaces
        $year = trim($year);
        $month = trim($month);

        // Set day, month and year of calendar
        $this->day = 1;  
        $this->month = ($month == '') ?    date('n') : $month;
        $this->year = ($year == '') ? date('Y') : $year;




        // Check for valid input     
        if (!preg_match('~[0-9]{4}~', $this->year))
            throw new exception('Invalid value for year');
        if (!is_numeric($this->month) || $this->month < 0 || $this->month > 13)



            throw new exception('Invalid value for month');

        // Set the current timestamp
        $this->timeStamp = mktime(1,1,1,$this->month, $this->day, $this->year);


        // Set the number of days in teh current month
        $this->daysInMonth = date('t',$this->timeStamp);

        // Start table
        $calHTML = sprintf("<table id=\"%s\" cellpadding=\"0\" cellspacing=\"%d\"><thead><tr>", $this->calendarName, $this->innerBorder);



     
        // Display previous month navigation
        if ($this->enableNav) {
            $pM = explode('-', date('n-Y', strtotime('-1 month', $this->timeStamp)));



            $calHTML .= sprintf("<td class=\"%s-%s\"><a href=\"?%smonth=%d&amp;year=%d\">%s</a></td>", $this->calendarName, $this->markup['nav'], $this->queryString, $pM[0], $pM[1],$this->prevMonthNavTxt);


        }
         
        // Month name and optional year
        $calHTML .= sprintf("<td colspan=\"%d\" id=\"%s-%s\">%s%s</td>", ($this->enableNav ? 5 : 7), $this->calendarName, $this->markup['header'], $this->getMonthName(), ($this->displayYear ? ' ' .$this->year : ''));  

        // Display next month navigation
        if ($this->enableNav) {
            $nM = explode('-', date('n-Y', strtotime('+1 month', $this->timeStamp)));



            $calHTML .= sprintf("<td class=\"%s-%s\"><a href=\"?%smonth=%d&amp;year=%d\">%s</a></td>", $this->calendarName, $this->markup['nav'], $this->queryString, $nM[0], $nM[1],$this->nextMonthNavTxt);  
        }

        $calHTML .= sprintf("</tr></thead><tbody><tr id=\"%s\">", $this->markup['days_of_week']);

        // Display day headers
        foreach($this->dayNames as $k => $dayName)  
            $calHTML .= sprintf("<td>%s</td>", $dayName);

        $calHTML .= "</tr><tr>";
         
        /// What the heck is this
        $sDay = date('N', $this->timeStamp) + $this->startDay - 1;  
         
        // Print previous months days
            for ($e=1;$e<=$sDay;$e++)
                $calHTML .= sprintf("<td class=\"%s-%s\">%s</td>", $this->calendarName, $this->markup['prev_month'],  (($this->displayNonMonthDays) ? $this->timeTravel("-" . ($sDay -$e) . " days", 'd', $this->timeStamp) : ''));  
     
        // Print days
        for ($i=1;$i<=$this->daysInMonth;$i++) {
            // Set current day and timestamp
            $this->day = $i;


            $this->timeStamp = mktime(1,1,1,$this->month, $this->day, $this->year);  
            
            // Set day as either plain text or event link
            if (isset($this->events[$this->year][$this->month][$this->day]))


                $this->htmlDay = sprintf("<a href=\"%s\" title=\"%s\">%s</a>", $this->events[$this->year][$this->month][$this->day]['event_link'], $this->events[$this->year][$this->month][$this->day]['event_title'], $this->day);


            else
                $this->htmlDay = $this->day;            
     
            // Display calendar cell
            $calHTML .= sprintf("<td %s%s>%s</td>", ($this->timeStamp == mktime(1,1,1,date('n'),date('j'),date('Y')) ? 'id="' . $this->calendarName . '-' . $this->markup['current_day'] . '" ' : ''), ((($sDay + $this->day) % 7 == 0) ? 'class="' . $this->calendarName . '-' . $this->markup['last_day_of_week'] . '"' : ''), $this->htmlDay);                  
                        
            // End row if necessary            
            if (($sDay + $this->day) % 7 == 0)
                $calHTML .= "</tr><tr>";  
        }
         
        // Print next months days
        for ($e2=1;$e2 < (7 - (($sDay + $this->daysInMonth -1) % 7)); $e2++)  
            $calHTML .= sprintf("<td class=\"%s-next-month-day%s\">%s</td>", $this->calendarName, ((($sDay + $this->day + $e2) % 7 == 0) ? ' ' . $this->calendarName . '-' . $this->markup['last_day_of_week'] : ''), (($this->displayNonMonthDays) ? $this->timeTravel("+$e2 days", 'd', $this->timeStamp) : ''));



         
        $calHTML .= "</tr></tbody></table>";
     
        // Tidy up html
        if ($this->prettyHTML) {
            $replaceWhat = array('<tr', '<td', '</tr>', '</table>', '<thead>', '</thead>', '<tbody>', '</tbody>');



            $replaceWith = array("\n\t\t<tr", "\n\t\t\t<td", "\n\t\t</tr>", "\n</table>", "\n\t<thead>", "\n\t</thead>", "\n\t<tbody>", "\n\t</tbody>");
            $calHTML = str_replace($replaceWhat, $replaceWith, $calHTML);



        }
         
        // Print calendar
        echo $calHTML;
    }
     
}
?>