Generar un calendario con PHP

Publicado en Jun 18, 2016

En este post te dejo una función para generar un calendario con PHP:

<?php
function generar_calendario($month,$year,$lang,$holidays = null){

	$calendar = '<table cellpadding="0" cellspacing="0" class="calendar">';

	if($lang=='en'){
		$headings = array('M','T','W','T','F','S','S');
	}
	if($lang=='es'){
		$headings = array('L','M','M','J','V','S','D');
	}
	if($lang=='ca'){
		$headings = array('DI','Dm','Dc','Dj','Dv','Ds','Dg');
	}
	
	$calendar.= '<tr class="calendar-row"><td class="calendar-day-head">'.implode('</td><td class="calendar-day-head">',$headings).'</td></tr>';

	$running_day = date('w',mktime(0,0,0,$month,1,$year));
	$running_day = ($running_day > 0) ? $running_day-1 : $running_day; 
	$days_in_month = date('t',mktime(0,0,0,$month,1,$year));
	$days_in_this_week = 1;
	$day_counter = 0;
	$dates_array = array();

	$calendar.= '<tr class="calendar-row">';

	for($x = 0; $x < $running_day; $x++):
		$calendar.= '<td class="calendar-day-np"> </td>';
		$days_in_this_week++;
	endfor;

	for($list_day = 1; $list_day <= $days_in_month; $list_day++):
		$calendar.= '<td class="calendar-day">';
		
		$class="day-number ";
		if($running_day == 0 || $running_day == 6 ){
			$class.=" not-work ";
		}
		
		$key_month_day = "month_{$month}_day_{$list_day}";

		if($holidays != null && is_array($holidays)){
			$month_key = array_search($key_month_day, $holidays);
			
			if(is_numeric($month_key)){
				$class.=" not-work-holiday ";
			}
		}
		
			$calendar.= "<div class='{$class}'>".$list_day."</div>";
			
		$calendar.= '</td>';
		if($running_day == 6):
			$calendar.= '</tr>';
			if(($day_counter+1) != $days_in_month):
				$calendar.= '<tr class="calendar-row">';
			endif;
			$running_day = -1;
			$days_in_this_week = 0;
		endif;
		$days_in_this_week++; $running_day++; $day_counter++;
	endfor;

	if($days_in_this_week < 8):
		for($x = 1; $x <= (8 - $days_in_this_week); $x++):
			$calendar.= '<td class="calendar-day-np"> </td>';
		endfor;
	endif;

	$calendar.= '</tr>';

	$calendar.= '</table>';
	
	return $calendar;
}

// Le pasamos el mes, el año y el idioma
echo generar_calendario(02,2016,"es");

?>

Podemos ponerle unos estilos básicos:

<style>
.calendar-day, .calendar-day-head{
	border: 1px solid #ddd;
	padding: 5px;
}
.calendar-day-head{
	background: #ddd;
}
</style>

Esto es todo 😉