Pentabarf Fahrplan Parser in PHP generating output in MediaWiki markup style

gistfile1.php

#! /usr/bin/php
<?php
/*
Ein Pentabarf Fahrplan Parser in PHP, der eine Textdatei ausspuckt, die man dem pyWikipedia-Bot vorwerfen kann.
*/
$filename = 'schedule.en.xml.0.30';
$xml = simplexml_load_file($filename);


// some functions
function time2int($time_sting)
{
	$time = explode(':', $time_sting);
	return $time[0] + ($time[1]/60);
}

function int2time($time_int)
{
	$hours = floor($time_int);
	$minutes = ($time_int - $hours) * 60;
	return sprintf('%d:%02d', $hours, $minutes);
}


function add_new_page($page_title, $page_text)
{
	echo '{{-start-}}' . "\n'''", $page_title, "'''", "\n", $page_text, "\n{{-stop-}}\n";
}

function gen_event_page($event)
{
	// Redirect for Event ID
	add_new_page($event['id'], '#REDIRECT [[' . $event->title . ']]');
	// Redirect for Event
	add_new_page($event->tag, '#REDIRECT [[' . $event->title . ']]');

	$text = '{{Event' . "\n";
	$text .= '|id=' . $event['id'] . "\n";
	$text .= '|day=' . $event->day['index'] . "\n";
    $text .= '|start=' . $event->start . "\n";
	$text .= '|duration=' . $event->duration . "\n";
	$text .= '|room=' . $event->room . "\n";
	$text .= '|tag=' . $event->tag . "\n";
	$text .= '|title=' . $event->title . "\n";
	$text .= '|subtitle=' . $event->subtitle . "\n";
	$text .= '|track=' . $event->track . "\n";
	$text .= '|type=' . $event->type . "\n";
	$text .= '|language=' . $event->language . "\n";
	$text .= '|persons=' . "\n";

	foreach ($event->persons->person AS $person)
	{
		$text .= '{{Person|' . $person['id'] . '|'. $person . '}}' . "\n";
	}

	$text .= '}}' . "\n\n";

	$text .= $event->abstract ."\n\n";
	$text .= $event->description ."\n\n";

	$text .= '==Links==' . "\n";

	if ( !empty($events->links) )
	{
		foreach ($events->links AS $link)
		{
			$text .= '* [' . $link->href . ' ' . $link . ']' . "\n";
		}
	}

	$text .= "\n\n"
			;
	$text .= '==Recordings==' . "\n";
	$text .= '* Please add here as soon as they are available' . "\n";

	add_new_page($event->title, $text);
}



// Falls Ausgabe als HTML erfolgen soll
// ?html an URL anhängen
if ( !empty($_GET['html']) )
{
	echo '<pre>';
}

// read XML file
$fahrplan_overview = array();
$rooms = array();
$rooms_reverse = array();
foreach($xml->day AS $day)
{
	foreach($day AS $room)
	{
		$room_name = trim((string) $room['name']);
		if ( empty($rooms_reverse[$room_name]) )
		{
			$rooms[] = $room_name;
			$rooms_reverse[$room_name] = count($rooms);
		}
		foreach($room AS $event)
		{
			// create event page
			$event->day = $day;
			gen_event_page($event);
			
			// add entry for overview
			$fahrplan_overview[(string) $day['index']]
				[(string) $event->start]
				[$rooms_reverse[(string) $room['name']]] = array(
				    (string) $event->duration,
				    '[[' . $event->title . ']]' . "<br />\n" . $event->subtitle . "\n\n" . $event->abstract
            );
		}
	}
}


// create overview page
$rooms_count = count($rooms);
$timeslot_duration_time = (string) $xml->conference->timeslot_duration;
$timeslot_duration = time2int($timeslot_duration_time);
$text = '';
foreach ($fahrplan_overview AS $day_index => $day)
{
	$text .= '==Day ' . $day_index . '==' . "\n";
	$text .= '{| border="1" cellspacing="0" cellpadding="4" rules="all" style="margin:1em 1em 1em 0;  border:1px solid; border-collapse:collapse; empty-cells:show;" width="100%"' . "\n";
	$text .= '|--- ' . "\n";
	$text .= '! Time' . "\n";
	$start_time = key($day);
	foreach ($rooms AS $row)
	{
		$text .= '! width="45%" | ' . $row . "\n";
	}
	ksort($day);

	$start = time2int($start_time);

	$room_busy = array();
	for ($i = $start; ; $i += $timeslot_duration)
	{
		if ( $i == 24 )
		{
			$i = 0;
		}
		$time = int2time($i);
		$text .= '|--- style="vertical-align:top;"' . "\n";
		$text .= '! ' . int2time($i) . "\n";

		for ($j = 1; $j <= $rooms_count; $j++)
		{
			// Vortrag für Slot vorhanden
			if ( !empty($day[$time][$j]) )
			{
				if ( $day[$time][$j][0] != $timeslot_duration_time )
				{
					$duration = time2int($day[$time][$j][0]);
					$text .= '|rowspan="' . ($duration / $timeslot_duration) . '"';
					$room_busy[$j] = ($duration / $timeslot_duration) - 1;
				}
				$text .= '| ' . $day[$time][$j][1] . "\n";
			}
			// Vorheriger Vortrag reicht in momentanen Slot hinein -> keine Zelle
			else if ( !empty($room_busy[$j]) )
			{
				$room_busy[$j]--;
			}
			// Vorheriger Vortrag reicht nicht in momentanen Slot hinein -> Leere Zelle
			else
			{
				$text .= '| ' . "\n";
			}
		}
		if ( $i >= 1.5 && $i <= 10 )
		{
			break;
		}
	}
	$text .= '|}' . "\n\n";
}
add_new_page('Fahrplan Overview', $text);


// Falls Ausgabe als HTML erfolgen soll 
if ( !empty($_GET['html']) )
{
	echo '</pre>';
}



?>