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Event Calendar

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A basic PHP 7 class to create calendar data.

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lib16/calendar-php

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README.md

Installation with Composer

This package is available on packagist, so you can use Composer to install it:

composer require lib16/calendar 
 require_once 'vendor/autoload.php'; use Lib16\Calendar\Calendar; use Lib16\Calendar\DateTime; setlocale(LC_TIME, 'de'); $easter = DateTime::easter(2016); $calendar = Calendar::month(5, 2016) ->setMonthFormat('%b %Y') ->setFirstWeekday('DE') ->addEntry('2016-05-01', 'Tag der Arbeit') ->addEntry($easter->copy()->addDays(39), 'Christi Himmelfahrt') ->addEntry($easter->copy()->addDays(50), 'Pfingstmontag') ->addEntry($easter->copy()->addDays(60), 'Fronleichnam'); print json_encode($calendar->buildArray(), JSON_PRETTY_PRINT);
< "weekdays": < "mon": "Mo", "tue": "Di", "wed": "Mi", "thu": "Do", "fri": "Fr", "sat": "Sa", "sun": "So" >, "years": [ < "time": "2016", "label": "2016", "months": [ < "time": "2016-05", "label": "Mai 2016", "month": "05", "weeks": [ < "time": "2016-W17", "label": "17", "leading": 6, "days": [ < "time": "2016-05-01", "label": "1", "weekday": "sun", "entries": [ < "class": "holiday", "title": "Tag der Arbeit" > ] > ] >, < "time": "2016-W18", "label": "18", "days": [ < "time": "2016-05-02", "label": "2", "weekday": "mon" >, < "time": "2016-05-03", "label": "3", "weekday": "tue" >, < "time": "2016-05-04", "label": "4", "weekday": "wed" >, < "time": "2016-05-05", "label": "5", "weekday": "thu", "entries": [ < "class": "holiday", "title": "Christi Himmelfahrt" > ] >, < "time": "2016-05-06", "label": "6", "weekday": "fri" >, < "time": "2016-05-07", "label": "7", "weekday": "sat" >, < "time": "2016-05-08", …

DateTime extends the standard PHP class with the same name.

Assuming that current date is Thu, 23 Feb 2017 20:59:49 +0100 :

 require_once 'vendor/autoload.php'; use Lib16\Calendar\DateTime; const LN = "\n"; print new DateTime(); print LN . new DateTime('2017-02-22'); print LN . new DateTime('first day of next month');
Thu, 23 Feb 2017 20:59:49 +0100 Wed, 22 Feb 2017 00:00:00 +0100 Wed, 01 Mar 2017 20:59:49 +0100 
 require_once 'vendor/autoload.php'; use Lib16\Calendar\DateTime; const LN = "\n"; print DateTime::create(); print LN . DateTime::create(new DateTime()); print LN . DateTime::create(new \DateTime()); print LN; print LN . DateTime::create('2017-02-22'); print LN . DateTime::create('2017-02'); print LN . DateTime::create('22.02.2017'); print LN . DateTime::create('02/22/2017'); print LN . DateTime::create('last day of previous month'); print LN . DateTime::create('first monday of june 2017'); print LN . DateTime::create('now'); print LN; print LN . DateTime::create(22, 2, 2017); print LN . DateTime::create(22, 2); print LN . DateTime::create(22); print LN . DateTime::create(2017, 2, 22); print LN . DateTime::create(2017, 2); print LN . DateTime::create(2017);
Thu, 23 Feb 2017 00:00:00 +0100 Thu, 23 Feb 2017 00:00:00 +0100 Thu, 23 Feb 2017 00:00:00 +0100 Wed, 22 Feb 2017 00:00:00 +0100 Wed, 01 Feb 2017 00:00:00 +0100 Wed, 22 Feb 2017 00:00:00 +0100 Wed, 22 Feb 2017 00:00:00 +0100 Tue, 31 Jan 2017 20:59:49 +0100 Mon, 05 Jun 2017 00:00:00 +0200 Thu, 23 Feb 2017 20:59:49 +0100 Wed, 22 Feb 2017 00:00:00 +0100 Wed, 22 Feb 2017 00:00:00 +0100 Wed, 22 Feb 2017 00:00:00 +0100 Wed, 22 Feb 2017 00:00:00 +0100 Thu, 23 Feb 2017 00:00:00 +0100 Thu, 23 Feb 2017 00:00:00 +0100 
 require_once 'vendor/autoload.php'; use Lib16\Calendar\DateTime; print DateTime::easter(2017);
Sun, 16 Apr 2017 00:00:00 +0200 
 require_once 'vendor/autoload.php'; use Lib16\Calendar\DateTime; const LN = "\n"; print LN . DateTime::create('2016-03-29')->addYears(2); print LN . DateTime::create('2016-03-29')->addMonths(-2); print LN . DateTime::create('2016-03-29')->addDays(3); print LN . DateTime::create('2016-04-01')->forceWorkday(); print LN . DateTime::create('2016-04-02')->forceWorkday(); print LN . DateTime::create('2016-04-03')->forceWorkday(); print LN . DateTime::create('2016-04-04')->forceWorkday();
 Thu, 29 Mar 2018 00:00:00 +0200 Fri, 29 Jan 2016 00:00:00 +0100 Fri, 01 Apr 2016 00:00:00 +0200 Fri, 01 Apr 2016 00:00:00 +0200 Fri, 01 Apr 2016 00:00:00 +0200 Mon, 04 Apr 2016 00:00:00 +0200 Mon, 04 Apr 2016 00:00:00 +0200

Clone with the copy method 

 require_once 'vendor/autoload.php'; use Lib16\Calendar\DateTime; $easter = DateTime::easter(2016); $pentecost = $easter->copy()->addDays(49); print $pentecost;
Sun, 15 May 2016 00:00:00 +0200

The formatLocalized method

This method returns a string representation according to locale settings. http://php.net/manual/en/function.strftime.php lists the specifiers you can use in the format string.

 require_once 'vendor/autoload.php'; use Lib16\Calendar\DateTime; setlocale(LC_TIME, 'de'); $date = DateTime::create('2016-06-05'); print $date->formatLocalized('%A, %#d. %B %Y');

Источник

Event Calendar with PHP

Event Calendar with PHP

In this article, I have developed an event calendar class that will populate all the days in a month based on the specified date, along with the events that we can add to the calendar.

While PHP doesn’t include a built-in calendar API per se (without including additional extensions), it does, however, give you a broad range of date and time methods that we can use to manipulate. In addition, we can use these methods to populate the pages showing the days, weeks, and months of a particular year.

Why should I use the calendar class?

It’s entirely up to you and your requirements. I have decided to take it upon myself to write my own class as I work on many projects that require an event-based calendar system. I’ve searched countless times for a minimal, dependency-free, and modern library. But couldn’t find one that I could seamlessly integrate with my projects. Therefore, I created a PHP class that can easily be integrated with any project, whether the project’s size is small or large.

Source

Create a new file Calendar.php and add the following code:

active_year = $date != null ? date('Y', strtotime($date)) : date('Y'); $this->active_month = $date != null ? date('m', strtotime($date)) : date('m'); $this->active_day = $date != null ? date('d', strtotime($date)) : date('d'); > public function add_event($txt, $date, $days = 1, $color = '') < $color = $color ? ' ' . $color : $color; $this->events[] = [$txt, $date, $days, $color]; > public function __toString() < $num_days = date('t', strtotime($this->active_day . '-' . $this->active_month . '-' . $this->active_year)); $num_days_last_month = date('j', strtotime('last day of previous month', strtotime($this->active_day . '-' . $this->active_month . '-' . $this->active_year))); $days = [0 => 'Sun', 1 => 'Mon', 2 => 'Tue', 3 => 'Wed', 4 => 'Thu', 5 => 'Fri', 6 => 'Sat']; $first_day_of_week = array_search(date('D', strtotime($this->active_year . '-' . $this->active_month . '-1')), $days); $html = '
active_year . '-' . $this->active_month . '-' . $this->active_day)); $html .= '
'; $html .= '
'; $html .= '
'; > for ($i = $first_day_of_week; $i > 0; $i--) < $html .= '
' . ($num_days_last_month-$i+1) . '
'; > for ($i = 1; $i active_day) < $selected = ' selected'; >$html .= '
'; $html .= '' . $i . ''; foreach ($this->events as $event) < for ($d = 0; $d active_year . '-' . $this->active_month . '-' . $i . ' -' . $d . ' day')) == date('y-m-d', strtotime($event[1]))) < $html .= '
'; $html .= $event[0]; $html .= '
'; > > > $html .= '
'; > for ($i = 1; $i ' . $i . '
'; > $html .= '
'; $html .= '
'; return $html; > > ?>

Add the following code to your stylesheet (CSS) or create a new file calendar.css:

.calendar < display: flex; flex-flow: column; >.calendar .header .month-year < font-size: 20px; font-weight: bold; color: #636e73; padding: 20px 0; >.calendar .days < display: flex; flex-flow: wrap; >.calendar .days .day_name < width: calc(100% / 7); border-right: 1px solid #2c7aca; padding: 20px; text-transform: uppercase; font-size: 12px; font-weight: bold; color: #818589; color: #fff; background-color: #448cd6; >.calendar .days .day_name:nth-child(7) < border: none; >.calendar .days .day_num < display: flex; flex-flow: column; width: calc(100% / 7); border-right: 1px solid #e6e9ea; border-bottom: 1px solid #e6e9ea; padding: 15px; font-weight: bold; color: #7c878d; cursor: pointer; min-height: 100px; >.calendar .days .day_num span < display: inline-flex; width: 30px; font-size: 14px; >.calendar .days .day_num .event < margin-top: 10px; font-weight: 500; font-size: 14px; padding: 3px 6px; border-radius: 4px; background-color: #f7c30d; color: #fff; word-wrap: break-word; >.calendar .days .day_num .event.green < background-color: #51ce57; >.calendar .days .day_num .event.blue < background-color: #518fce; >.calendar .days .day_num .event.red < background-color: #ce5151; >.calendar .days .day_num:nth-child(7n+1) < border-left: 1px solid #e6e9ea; >.calendar .days .day_num:hover < background-color: #fdfdfd; >.calendar .days .day_num.ignore < background-color: #fdfdfd; color: #ced2d4; cursor: inherit; >.calendar .days .day_num.selected

How To Use

Include the class in your project and create a new instance.

include 'Calendar.php'; $calendar = new Calendar();

We can specify a date while creating a new instance:

include 'Calendar.php'; $calendar = new Calendar('2023-05-12');

Add new events to the calendar:

$calendar->add_event('Holiday', '2023-05-14');

We can specify the number of days the event should last by binding an additional value to the add_event method:

$calendar->add_event('Holiday', '2023-05-14', 7); // Event will last for 7 days

We can also change the color:

$calendar->add_event('Holiday', '2023-05-14', 7, 'red');

Only red, blue, and green will work (the default is orange). You can add more colors to the CSS file.

We can populate the calendar in HTML format with the following code:

Example Code

Create a new file example.php and add the following code:

add_event('Birthday', '2023-05-03', 1, 'green'); $calendar->add_event('Doctors', '2023-05-04', 1, 'red'); $calendar->add_event('Holiday', '2023-05-16', 7); ?>

The stylesheet (style.css) for our example page:

* < box-sizing: border-box; font-family: -apple-system, BlinkMacSystemFont, "segoe ui", roboto, oxygen, ubuntu, cantarell, "fira sans", "droid sans", "helvetica neue", Arial, sans-serif; font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; >body < background-color: #FFFFFF; margin: 0; >.navtop < background-color: #3b4656; height: 60px; width: 100%; border: 0; >.navtop div < display: flex; margin: 0 auto; width: 800px; height: 100%; >.navtop div h1, .navtop div a < display: inline-flex; align-items: center; >.navtop div h1 < flex: 1; font-size: 24px; padding: 0; margin: 0; color: #ebedee; font-weight: normal; >.navtop div a < padding: 0 20px; text-decoration: none; color: #c4c8cc; font-weight: bold; >.navtop div a i < padding: 2px 8px 0 0; >.navtop div a:hover < color: #ebedee; >.content < width: 800px; margin: 0 auto; >.content h2

And now, if we navigate to our example page, it will appear similar to the following:

Event Calendar PHP

If you don’t see any events populated on the calendar, make sure the dates are correct, and your server timezone is set correctly. You can change the timezone with the below code.

date_default_timezone_set('America/Los_Angeles');

The full list of supported timezones are available here.

Conclusion

While the calendar class I’ve created is not a complete solution, it will most definitely help you integrate the class into any project seamlessly and extend the base code.

Drop a comment below and let me know if you encounter any issues with the class. Don’t forget to follow us on social media and share our articles, as this will help our website grow, and we can provide more quality content.

Released under the MIT License. If you’re going to redistribute the code, please include my name and link to this article. Thanks!

If you would like to support us, consider purchasing the advanced event calendar system below as it will greatly help us create more tutorials and keep our website up and running. The advanced package includes improved code and more features.

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