Mark Weaver wrote:
Hi all,
I've put this off as long as possible, however I think I've reached an
impasse.
I've got an application that I've been writing. One of the modules for
this app is an event calendar. I've got the calendar to the place where
it displays the current month as well as previous and future months. The
place I'm stuck is it will only show months in the past or the future
that are months in the current year.
Basically the method I'm using to move backward and forward is with Unix
timestamps.
1. When the calendar first loads the "what" is checked for;
// passed in via $_GET
$what == current, prev, or next
a. "current" is the default
$now = time()
$prev = date('n',$now)-1
$next = date('n',$now)+1
b. Timestamp values are then stored in an array and then
sent to client in session cookie which is then accessed
upon each subsequent request to display the event calendar.
My question/boggle is why, when the calendar advances to
December(current year) it will display January, but of the current year.
The same happens in reverse.
Once I reach the end of the year either in the past or future the month
increases or decreases accordingly, but the year doesn't change. Since
the year value isn't changing the month calendar days that are displayed
simply repeat themselves.
I know there's something I'm missing, but I am definitely not seeing
what it is...
/********************** code below ************************/
$cal = new Calendar;
$calpos = array();
// check incoming values
if ($what === "current"){
$cal->setCal(0,0,0,date('n'),1);
$now = time();
$prev = $cal->getStamp(date('n',$now)-1,1);
$next = $cal->getStamp(date('n',$now)+1,1);
$calpos['curr'] = $now;
$calpos['prev'] = $prev;
$calpos['next'] = $next;
$_SESSION['calendar'] = $calpos;
}
elseif($what === "prev"){
$peek = $_SESSION['calendar'];
$now = $peek['prev'];
$cal->setCal(0,0,0,date('n',$now),1);
$prev = $cal->getStamp(date('n',$now)-1,1);
$next = $cal->getStamp(date('n',$now)+1,1);
$calpos['curr'] = $now;
$calpos['prev'] = $prev;
$calpos['next'] = $next;
$_SESSION['calendar'] = $calpos;
}
elseif($what === "next"){
$peek = $_SESSION['calendar'];
$now = $peek['next'];
$cal->setCal(0,0,0,date('n',$now),1);
$prev = $cal->getStamp(date('n',$now)-1,1);
$next = $cal->getStamp(date('n',$now)+1,1);
$calpos['curr'] = $now;
$calpos['prev'] = $prev;
$calpos['next'] = $next;
$_SESSION['calendar'] = $calpos;
}
<================================================================>
function setCal($h=0,$m=0,$s=0,$offset,$dayVal=1){
$stamp = date('U',mktime($h,$m,$s, $offset,$dayVal,date('Y')));
// Using the stamp the various necessary properties are set for the
// object
function getStamp($dateStr,$dayVal=1){
return date('U',mktime(0,0,0, $dateStr,$dayVal,date('Y')));
}
After scratching my head on this for a few hours I'm still no closer to
the solution, but essentially what I need to do in the getStamp function
is test the {year} of the stamp that results from the incoming $dateStr
against the actual {year} value of the current year's timestamp time().
In case it helps below is the code being used in it's entirety.
The first block of code is the Calendar class and the second is the code
for the page which displays the event calendar.
my appologies if it's all jumbled up.
/********************* Calendar Class ***********************/
class Calendar{
public
$month,$weekday,$dayname,$monthname,$numdays,$year,$mday,$dbdate,$today,$fday;
public function Calendar(){
@$this->month = $month;
@$this->weekday = $weekday;
@$this->dayname = $dayname;
@$this->monthname = $monthname;
@$this->numdays = $numdays;
@$this->year = $year;
@$this->mday = $mday;
@$this->dbdate = $dbdate;
@$this->fday = $fday;
}
public function setCal($h=0,$m=0,$s=0,$offset,$dayVal=1){
$stamp = date('U',mktime($h,$m,$s, $offset,$dayVal,date('Y')));
$month = date('m',$stamp); // month value with leading zero
$mday = date('d',$stamp); // day value with leading zero
$dbdate = date('Y-m-d',$stamp);
$dayname = date('l',$stamp);
$monthname = date('F',$stamp);
$numdays = date('t',$stamp);
$year = date('Y',$stamp);
$weekday = date('w',$stamp);
$fday = date('w', mktime(0, 0, 0, date('n',$stamp), 1, date('Y',$stamp)));
$this->month = $month;
$this->weekday = $weekday;
$this->dayname = $dayname;
$this->monthname = $monthname;
$this->numdays = $numdays;
$this->year = $year;
$this->mday = $mday;
$this->dbdate = $dbdate;
$this->fday = $fday;
}
public function getTodayNum(){
return date('j',time());
}
public function getStamp($dateStr,$dayVal=1){
return date('U',mktime(0,0,0, $dateStr,$dayVal,date('Y')));
}
public function getMonthName(){
return $this->monthname;
}
public function getTodayName(){
return $this->dayname;
}
public function getDay(){
return $this->weekday;
}
public function getMday($stamp){
return date('j',$stamp);
}
}
/**********************************************************/
/********************* Event Calendar Page ****************/
function display_calendar($what){
include 'config.php';
require_once 'inc/MyDB.inc';
require_once 'inc/forms.inc';
require_once 'inc/Calendar.inc';
@session_start();
if ( isset($_SESSION['TSUser']) ){
// set userObj from Session
$userObj = $_SESSION['TSUser'];
$cal = new Calendar;
$calpos = array();
// check incoming values
if ($what === "current"){
$cal->setCal(0,0,0,date('n'),1);
$now = time();
$prev = $cal->getStamp(date('n',$now)-1,1);
$next = $cal->getStamp(date('n',$now)+1,1);
$calpos['curr'] = $now;
$calpos['prev'] = $prev;
$calpos['next'] = $next;
$_SESSION['calendar'] = $calpos;
}
elseif($what === "prev"){
$peek = $_SESSION['calendar'];
$now = $peek['prev'];
$cal->setCal(0,0,0,date('n',$now),1);
$prev = $cal->getStamp(date('n',$now)-1,1);
$next = $cal->getStamp(date('n',$now)+1,1);
$calpos['curr'] = $now;
$calpos['prev'] = $prev;
$calpos['next'] = $next;
$_SESSION['calendar'] = $calpos;
}
elseif($what === "next"){
$peek = $_SESSION['calendar'];
$now = $peek['next'];
$cal->setCal(0,0,0,date('n',$now),1);
$prev = $cal->getStamp(date('n',$now)-1,1);
$next = $cal->getStamp(date('n',$now)+1,1);
$calpos['curr'] = $now;
$calpos['prev'] = $prev;
$calpos['next'] = $next;
$_SESSION['calendar'] = $calpos;
}
$totalweeks = ($cal->numdays/7);
pageHeader("Calendar: {$userObj['user']}","","");
pageContainers();
echo "<BR>\n";
echo "<table style=\"border-left: 1px solid #000000; border-top: 1px
solid #000000;\" border=0 cellpadding=0 cellspacing=0>\n";
echo "<tr><td colspan=7 height=30 align=center><h1>";
echo $cal->monthname . " " . $cal->year;
echo "</h1></td></tr>\n";
$todaysMonthNum = $cal->getTodayNum();
$back = "<a href=\"index.php?page=show_calendar&cal=prev\">< < Back</a>";
$forward = "<a href=\"index.php?page=show_calendar&cal=next\">Forward
> ></a>";
echo "<tr align=center><td colspan=2>{$back}</td><td colspan=3><a
href=\"index.php?page=show_calendar&cal=current\">Current
Month</a></td><td colspan=2>{$forward}</td></tr>\n";
echo "<tr
align=center><td>Sunday</td><td>Monday</td><td>Tuesday</td><td>Wednesday</td><td>Thursday</td><td>Friday</td><td>Saturday</td>\n";
$totalweeks = ($cal->numdays/7);
$cday = 1;
$carr = array(array());
$bkgrnd = '';
for($i=0;$i<$totalweeks;$i++){
echo "<tr>\n";
for ($d=0;$d<7;$d++){
if ( $d<$cal->fday && $i==0){
echo "<td valign=top width=145 height=110 style=\"border-right: 1px
solid #000000; border-bottom: 1px solid #000000;\">";
$carr[$i][$d] = " ";
echo $carr[$i][$d];
echo "</td>";
}
else{
if ( $cday == $cal->getTodayNum() ){
$bkgrnd = "#cccccc";
}
else{
$bkgrnd = '';
}
echo "<td bgcolor=\"{$bkgrnd}\" valign=top width=145 height=110
style=\"border-right: 1px solid #000000; border-bottom: 1px solid
#000000;\">";
$carr[$i][$d] = $cday;
$cday++;
echo $carr[$i][$d];
echo "</td>";
}
if($cday > $cal->numdays){
break;
}
}
echo "</tr>\n";
$d = 0;
}
echo "</table>\n";
pageFooter();
}
else{
noValidSession();
}
}
--
Mark
-------------------------
the rule of law is good, however the rule of tyrants just plain sucks!
Real Tax Reform begins with getting rid of the IRS.
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