php issue

[justinh]

I'm trying to make my calender able to cycle through the months. But for some reason my function doesn't update the calender.. but it does work.

 

you can see the calender here.http://www.wmptest.com/HuntReserver/calender.php

 

here is the code in question i have:

 

<?php
function NavigateCalender($month){

if (isset($_GET['direction'])){



switch($_GET['direction']){

    case "1":
    
    $month--;

    echo $month;
    break;
    
    case "2":
    
    $month++;
    echo $month;
    

    break;
    }
    } else {
    }
    }
$date = time();
$day = date('d',$date);
$month = date('m',$date);
NavigateCalender($month);
$year = date('y',$date);
$firstday = mktime(0,0,0, $month, 1, $year);
$title = date('F', $firstday);
$dayofweek = date('D', $firstday);


switch($dayofweek){

    case "Sun":
    $blank = 0;
    break;
    case "Mon":
    $blank = 1;
    break;
    case "Tue":
    $blank = 2;
    break;
    case "Wed":
    $blank = 3;
    break;
    case "Thu":
    $blank = 4;
    break;
    case "Fri":
    $blank = 5;
    break;
    case "Sat":
    $blank = 6;
    break;
    }
    $daysinmonth = cal_days_in_month(0, $month, $year);
    echo "<table border=1 width=294>";
    echo "<tr><th colspan=7><a href=\"calender.php?direction=1\"><</a> $month - $year <a href=\"calender.php?direction=2\">></a></th></tr>";
    echo"<tr><td width=42>S</td><td width=42>M</td><td width=42>T</td><td width=42>W</td><td width=42>T</td><td width=42>F</td>
    <td width=42>S</td></tr>";

 

Thanks abunch!

 

 

 

[envexlabs]

maybe for the switch try $month + 1, or $month - 1 instead of --  and  ++

[justinh]

i tried your suggestion but it still isnt working. 

 

http://www.wmptest.com/HuntReserver/calender.php

 

 

<?php
function NavigateCalender($month){

if (isset($_GET['direction'])){



switch($_GET['direction']){

    case "1":
    
    $month - 1;

    echo $month;
    break;
    
    case "2":
    
    $month + 1;
    echo $month;
    

    break;
    }
    } else {
    }
    }
$date = time();
$day = date('d',$date);
$month = date('m',$date);
NavigateCalender($month);
$year = date('y',$date);
$firstday = mktime(0,0,0, $month, 1, $year);
$title = date('F', $firstday);
$dayofweek = date('D', $firstday);


switch($dayofweek){

    case "Sun":
    $blank = 0;
    break;
    case "Mon":
    $blank = 1;
    break;
    case "Tue":
    $blank = 2;
    break;
    case "Wed":
    $blank = 3;
    break;
    case "Thu":
    $blank = 4;
    break;
    case "Fri":
    $blank = 5;
    break;
    case "Sat":
    $blank = 6;
    break;
    }
    $daysinmonth = cal_days_in_month(0, $month, $year);
    echo "<table border=1 width=294>";
    echo "<tr><th colspan=7><a href=\"calender.php?direction=1\"><</a> $month - $year <a href=\"calender.php?direction=2\">></a></th></tr>";
    echo"<tr><td width=42>S</td><td width=42>M</td><td width=42>T</td><td width=42>W</td><td width=42>T</td><td width=42>F</td>
    <td width=42>S</td></tr>";

 

 

 

 

 

[justinh]

Is this impossible to do in PHP? Or am I just wording my question wrong? It seem's like no forums have a suggestion for me.

[justinh]

could AJAX solve my problem?  ???

[kenrbnsn]

I took a look at your code. You had a few problems.

 

1) your function NavigateCalender() never returned the new month

2) You need to pass the month that's current being displayed on the URL so the script knows which month to start from

3) the function NavigateCalender() really needs to figure out and return both the month and year.

 

Here's my take on your code (it does seem to work):

<?php
function NavigateCalender($month, $year){
$cur = strtotime($year . '-' . $month . '-01');
if (isset($_GET['direction'])){
	switch($_GET['direction']){
	    case "1":
		    list($year,$month) = explode('-',date('Y-m',strtotime('-1 month',$cur)));
		    break;
	    case "2":
		    list($year,$month) = explode('-',date('Y-m',strtotime('+1 month',$cur)));
		    break;
	    }
}
return(array($month,$year));
}
$date = time();
$day = date('d',$date);
$month = (isset($_GET['month']))?$_GET['month']:date('m',$date);
$year = (isset($_GET['year']))?$_GET['year']:date('Y',$date);
list($month,$year) = NavigateCalender($month,$year);
$firstday = mktime(0,0,0, $month, 1, $year);
$title = date('F', $firstday);
$dayofweek = date('D', $firstday);


switch($dayofweek){

    case "Sun":
    $blank = 0;
    break;
    case "Mon":
    $blank = 1;
    break;
    case "Tue":
    $blank = 2;
    break;
    case "Wed":
    $blank = 3;
    break;
    case "Thu":
    $blank = 4;
    break;
    case "Fri":
    $blank = 5;
    break;
    case "Sat":
    $blank = 6;
    break;
    }
    $daysinmonth = date('t',strtotime($year . '-' . $month . '-01'));
    echo "<table border=1 width=294>";
    echo '<tr><th colspan=7><a href="?direction=1&month=' . $month . '&year=' . $year . '">< </a>' . $month . ' - '. $year . '<a href="?direction=2&month=' . $month . '&year=' . $year . '"> ></a></th></tr>';
    echo"<tr><td width=42>S</td><td width=42>M</td><td width=42>T</td><td width=42>W</td><td width=42>T</td><td width=42>F</td>
    <td width=42>S</td></tr>";
?>

 

Ken

[justinh]

i <3 u ken

[justinh]

don't know if your still here Ken but i was wondering if you could explain this line you added:

 

 

$cur = strtotime($year . '-' . $month . '-01');

 

I'm trying to understand how the code you gave me works.

[kenrbnsn]

The function strtotime() takes two parameters. The first is the date/time string to be converted. The second, which most people don't use, is the starting timestamp that the first parameter uses.

 

So that statement gets the time stamp for the 1st day of the year/month that's passed to the function and uses that to go forward or back one month.

 

You can shorten the function a little by doing:

<?php
function NavigateCalender($month, $year){
$cur = strtotime($year . '-' . $month . '-01');
if (isset($_GET['direction'])){
                $diff = ($_GET['direction'] == 1)?'-':'+';
                list($year,$month) = explode('-',date('Y-m',strtotime($diff . '1 month',$cur)));
}
return(array($month,$year));
}
?>

 

Ken