PHP Basic Calendar Tutorial By UnknownGhost03 Fix!
Replacing the empty cells, I add previous & next month, days to the current month that user are viewing.
Source code:
<html>
<head>
<title>PHP Basic Calendar</title>
<script>
function goLastMonth(month, year){
if(month == 1) {
--year;
month = 13;
}
--month
var monthstring = ""+month+"";
var monthlength = monthstring.length;
if(monthlength <=1){
monthstring = "0" + monthstring;
}
document.location.href = "<?php $_SERVER['PHP_SELF'];?>?month="+monthstring+"&year="+year;
}
function goNextMonth(month, year){
if(month == 12) {
++year;
month = 0;
}
++month
var monthstring = ""+month+"";
var monthlength = monthstring.length;
if(monthlength <=1){
monthstring = "0" + monthstring;
}
document.location.href = "<?php $_SERVER['PHP_SELF'];?>?month="+monthstring+"&year="+year;
}
</script>
</head>
<body>
<?php
//get current date or specific month and year
if (isset($_GET['day'])){
$day = $_GET['day'];
} else {
$day = date("d");
}
if(isset($_GET['month'])){
$month = $_GET['month'];
} else {
$month = date("m");
}
if(isset($_GET['year'])){
$year = $_GET['year'];
}else{
$year = date("Y");
}
//get date data for display such as month name
$currentTimeStamp = strtotime( "01-$month-$year");
$monthName = date("F", $currentTimeStamp);
?>
<table border="1px" cellpadding="0px" cellspacing="0px">
<tr>
<td align="center">
<input style='width:50px;' type='button' value='<'name='previousbutton' onclick ="goLastMonth(<?php echo $month.','.$year?>)">
</td>
<td align="center" colspan="5"><?php echo $monthName." ".$year; ?></td>
<td align="center">
<input style='width:50px;' type='button' value='>'name='nextbutton' onclick ="goNextMonth(<?php echo $month.','.$year?>)">
</td>
</tr>
<tr>
<td align="center" width='100px'>Sunday</td>
<td align="center" width='100px'>Monday</td>
<td align="center" width='100px'>Tuesday</td>
<td align="center" width='100px'>Wednesday</td>
<td align="center" width='100px'>Thursday</td>
<td align="center" width='100px'>Friday</td>
<td align="center" width='100px'>Saturday</td>
</tr>
<tr>
<?php
//get previous month
$prevMonth = $month - 1;
$prevYear = $year;
if($prevMonth <= 0){
$prevMonth = 12;
$prevYear--;
}
$pMonthStr = "" + $prevMonth;
if(strlen($pMonthStr) <= 1)
$pMonthStr = "0" + $pMonthStr;
//get num of day for previous month
$previousTimeStamp = strtotime( "01-$pMonthStr-$prevYear");
$prevNumDays = date("t", $previousTimeStamp);
//get the number of days in the current month and year
$numDays = date("t", $currentTimeStamp);
//keep track of the number of cell created
$counter = 0;
for($i = 1; $i < $numDays+1; $i++, $counter++){
$timeStamp = strtotime("$year-$month-$i");
//create empty cell until first day of the month
if($i == 1) {
$firstDay = date("w", $timeStamp);
for($j = 0; $j < $firstDay; $j++, $counter++) {
//echo previous month day
$prevDay = $prevNumDays-$firstDay+$j+1;
echo "<td>$prevDay</td>";
}
}
//create new row
if($counter % 7 == 0) {
echo"</tr><tr>";
}
//print day number
echo "<td>$i</td>";
}
//fill counter
$fillCounter = 1;
//fill up the leftover cells of the table
while($counter % 7 != 0) {
//echo next month day
echo "<td>$fillCounter</td>";
$fillCounter++;
$counter++;
}
?>
</tr>
</table>
</body>
</html>
