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  • Build a simple monthly calendar using PHP

    September 12, 2013

    Please follow below 5 steps to create monthly calendar using PHP.

    1. Define the current date OR a date coming by POST after the calendar form gets submitted:

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    $today=getdate();
$year=$_POST['year']?$_POST['year']:$today['year'];
$month=$_POST['month']?$_POST['month']:$today['month'];
$day=$_POST['day']?$_POST['day']:$event['day'];

    PHP getdate() function wiil return an array of year, month and day. We assign this to $today variable and will use it to define the calendar day, year and month – if they are coming from POST, the POST values have priority – otherwise we use $today values.

    2. Now, define the number of days in the given month. We use function cal_days_in_month() for that:

    View Code PHP
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    $numdays=cal_days_in_month(CAL_GREGORIAN, $month, $year);

    3. Now there’s one specific. Make sure the calendar looks like the printed calendars by defining the week start day.

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    // calculate 'extra' days - these which need to come on the first
// line - like 30-31- -- - -- - -- - -- - 1
$estart=(7-$wday)+28;
$extra=$numdays-$estart;

    Include the design template:

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require_once("mc_template.html");

    4. Display year and month drop boxes:

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<select name="year" onchange="this.form.submit();">
<?php
for($i=$start_year;$i<=2050;$i++)
{
if($i==$year) $selected='selected';
else $selected='';
echo "<option $selected value=$i>$i</option>";
}
?>
</select>
 
<select name="month" onchange="this.form.submit();">
<php
for($i=1;$i<=12;$i++)
{
if($i==$month) $selected='selected';
else $selected='';
echo "<option $selected value=$i>".$lmonths[$months[$i]]."</option>";
}
// end PHP
</select>

    5. HTML code:

    View Code PHP
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<?php
if($extra<0) $extra=0;
for($i=$estart;$i<$numdays;$i++)
{     
   // ...
   // the full code can be downloaded at the bottom
}
?>
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