John Davidson

Message:

I have a php code as shown below in which I want to show current and next month dates in php. Below are the two functions which I am using in order to show current and next month dates.

html/php code (current month function and next month function):

<!-- current month function START -->



<?php

function buildDateSelectionCurrentMonth($month)

{

    # array will hold our months

    $months = [

        str_pad($month, 2, "0", STR_PAD_LEFT),

        str_pad(($month + 1), 2, "0", STR_PAD_LEFT),

    ];



    # will hold our HTML

    $output = '';



    # got our months now, let's iterate over them



    foreach ($months as $index => $month) {

        $year = date('Y');



        // Adjust month and date if necessary:

        if ($month == 13) {

            $month = 1;

            $year++;

        }



        if ($index == 0) {

            # create timestamp for the first of a month

            # then get number of days for that month

            $numberOfDaysMonth = date('t', strtotime($year . '-' . $month . '-01'));



            # we can now loop over the days and fill the output string

            for ($i = 1; $i <= $numberOfDaysMonth; $i++) {

                $output .= '<div class="select-date" style="margin-right:30px; margin-top:20px;">

<input type="date" class="class-sitting-date" name="class_sitting_date_current_month[]" readonly="readonly" value="' . $year . '-' . $month . '-' . str_pad($i, 2, "0", STR_PAD_LEFT) . '">

</div>';

            }

        }

    }



    return $output;

}



<!-- current month function END -->





<!-- next month function START -->

<?php

function buildDateSelectionNextMonth($month)

{

    # array will hold our months

    $months = [

        str_pad($month, 2, "0", STR_PAD_LEFT),

        str_pad(($month + 1), 2, "0", STR_PAD_LEFT),

    ];



    # will hold our HTML

    $output = '';



    # got our months now, let's iterate over them



    foreach ($months as $index => $month) {

        $year = date('Y');



        // Adjust month and date if necessary:

        if ($month == 13) {

            $month = 1;

            $year++;

        }



        if ($index == 0) {

            # create timestamp for the first of a month

            # then get number of days for that month

            $numberOfDaysMonth = date('t', strtotime($year . '-' . $month . '-01'));



            # we can now loop over the days and fill the output string

            for ($i = 1; $i <= $numberOfDaysMonth; $i++) {

                $output .= '<div class="select-date" style="margin-right:30px; margin-top:20px;">

<input type="date" class="class-sitting-date" name="class_sitting_date_next_month[]" readonly="readonly" value="' . $year . '-' . $month . '-' . str_pad($i, 2, "0", STR_PAD_LEFT) . '">

</div>';

            }

        }

    }



    return $output;

}



?>

<!-- next month function END -->

html/php code (current month dates and next month dates):

<!-- Current Month Dates START -->

<div class="sitting-days">

    <h4 name="dates-selection" style="text-align:center;"><a name="dates-selection">Select Date</a>

    </h4>

    <?php echo buildDateSelectionCurrentMonth(date('n')); ?>     // Line Y

</div>

<!-- Current Month Dates END -->





<!-- Next Month Dates START -->

<div class="sitting-days" style="margin-left:30px;">

    <h4 style="text-align:center;">Select Date</h4>

    <div class="sitting-days">

        <?php echo buildDateSelectionNextMonth(date('n')+1); ?>   // Line Z

    </div>

</div>

<!-- Next Month Dates END -->

                

                

At Line Y and Line Z its currently displaying November and December dates

When the current month is September then it will display September 2020 dates and October 2020 dates and vice-versa.

Problem Statement:

Just for fun, at Line Y and Line Z I did the following changes:

At Line Y:

echo buildDateSelectionCurrentMonth(12);

At Line Z

echo buildDateSelectionNextMonth(13);

The reason why I did that because I want to check whether it will display January 2021 dates or not.

I noticed that it didn't display January 2021 dates at Line Z although it was displaying December 2020 dates at Line Y.

I am wondering what changes I need to make in the php code above so that it displays January 2021 dates when the current month is December.

---

My Answer:
php
function getCurrentMonthDates() {
$currentMonth = date('m');
$currentYear = date('Y');
$daysInMonth = cal_days_in_month(CAL_GREGORIAN, $currentMonth, $currentYear);

$currentMonthDates = array();
for ($i = 1; $i <= $daysInMonth; $i++) {
$currentMonthDates[] = $currentYear . '-' . $currentMonth . '-' . str_pad($i, 2, '0', STR_PAD_LEFT);
}

return $currentMonthDates;
}

function getNextMonthDates() {
$nextMonth = date('m', strtotime('+1 month'));
$nextYear = date('Y', strtotime('+1 month'));
$daysInMonth = cal_days_in_month(CAL_GREGORIAN, $nextMonth, $nextYear);

$nextMonthDates = array();
for ($i = 1; $i <= $daysInMonth; $i++) {
$nextMonthDates[] = $nextYear . '-' . $nextMonth . '-' . str_pad($i, 2, '0', STR_PAD_LEFT);
}

return $nextMonthDates;
}

$currentMonthDates = getCurrentMonthDates();
$nextMonthDates = getNextMonthDates();
?>

Current Month Dates:

Next Month Dates: