<?php
/* Copyright (C) 2009 Technikum-Wien
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
 *
 * Authors: Christian Paminger <christian.paminger@technikum-wien.at>,
 *          Andreas Oesterreicher <andreas.oesterreicher@technikum-wien.at>,
 *          Rudolf Hangl <rudolf.hangl@technikum-wien.at> and
 *          Gerald Simane-Sequens <gerald.simane-sequens@technikum-wien.at>.
 */
/**
 * Exportiert die Daten von Prestudenten und Studenten in ein Excel File.
 *
 * Parameter:
 * GET:
 * studiensemester_kurzbz ... Studiensemester
 * POST:
 * data ... Liste der PrestudentIDs der Personen die im Export aufscheinen sollen getrennt durch ','
 */
require_once('../../config/vilesci.config.inc.php');
require_once('../../include/functions.inc.php');
require_once('../../include/person.class.php');
require_once('../../include/benutzer.class.php');
require_once('../../include/student.class.php');
require_once('../../include/prestudent.class.php');
require_once('../../include/datum.class.php');
require_once('../../include/Excel/excel.php');
require_once('../../include/udf.class.php');

$user = get_uid();
$datum_obj = new datum();
$db = new basis_db();
loadVariables($user);

//Parameter holen
$data = $_REQUEST['data'];
$studiensemester_kurzbz = $_GET['studiensemester_kurzbz'];

$maxlength = array();
$zeile = 1;
$zgv_arr = array();
$zgvmas_arr = array();

//ZGV laden
$qry = "SELECT * FROM bis.tbl_zgv ORDER BY zgv_kurzbz";
if ($result = $db->db_query($qry))
{
	while($row = $db->db_fetch_object($result))
	{
		$zgv_arr[$row->zgv_code] = $row->zgv_kurzbz;
	}
}

//ZGV Master laden
$qry = "SELECT * FROM bis.tbl_zgvmaster ORDER BY zgvmas_kurzbz";
if ($result = $db->db_query($qry))
{
	while($row = $db->db_fetch_object($result))
	{
		$zgvmas_arr[$row->zgvmas_code] = $row->zgvmas_kurzbz;
	}
}

// Creating a workbook
$workbook = new Spreadsheet_Excel_Writer();
$workbook->setVersion(8);

// sending HTTP headers
$workbook->send("Studenten". "_" . date("d_m_Y") . ".xls");

// Creating a worksheet
$worksheet =& $workbook->addWorksheet("Studenten");
$worksheet->setInputEncoding('utf-8');

$format_bold =& $workbook->addFormat();
$format_bold->setBold();

$format_title =& $workbook->addFormat();
$format_title->setBold();
// let's merge
$format_title->setAlign('merge');

//Zeilenueberschriften ausgeben
$i = 0;
$zeile = 0;

$worksheet->write($zeile, $i, "ANREDE", $format_bold);
$maxlength[$i] = 6;
$worksheet->write($zeile, ++$i, "TITELPRE", $format_bold);
$maxlength[$i] = 8;
$worksheet->write($zeile, ++$i, "NACHNAME", $format_bold);
$maxlength[$i] = 8;
$worksheet->write($zeile, ++$i, "VORNAME", $format_bold);
$maxlength[$i] = 7;
$worksheet->write($zeile, ++$i, "TITELPOST", $format_bold);
$maxlength[$i] = 9;
$worksheet->write($zeile, ++$i, "EMail Privat", $format_bold);
$maxlength[$i] = 12;
$worksheet->write($zeile,++$i,"STRASSE (Zustelladresse)", $format_bold);
$maxlength[$i]=12;
$worksheet->write($zeile,++$i,"PLZ", $format_bold);
$maxlength[$i]=3;
$worksheet->write($zeile,++$i,"ORT", $format_bold);
$maxlength[$i]=3;
$worksheet->write($zeile,++$i,"GEMEINDE", $format_bold);
$maxlength[$i]=9;
$worksheet->write($zeile,++$i,"NATION", $format_bold);
$maxlength[$i] = 6;
$worksheet->write($zeile, ++$i, "GEBURTSDATUM", $format_bold);
$maxlength[$i] = 12;
$worksheet->write($zeile, ++$i, "PERSONENKENNZEICHEN", $format_bold);
$maxlength[$i] = 19;
$worksheet->write($zeile, ++$i, "STAATSBÜRGERSCHAFT", $format_bold);
$maxlength[$i] = 16;
$worksheet->write($zeile, ++$i, "SVNR", $format_bold);
$maxlength[$i] = 4;
$worksheet->write($zeile, ++$i, "ERSATZKENNZEICHEN", $format_bold);
$maxlength[$i] = 17;
$worksheet->write($zeile, ++$i, "GESCHLECHT", $format_bold);
$maxlength[$i] = 10;
$worksheet->write($zeile, ++$i, "STUDIENGANG", $format_bold);
$maxlength[$i] = 11;
$worksheet->write($zeile, ++$i, "SEMESTER IM $studiensemester_kurzbz", $format_bold);
$maxlength[$i] = 19;
$worksheet->write($zeile, ++$i, "SEMESTER AKTUELL", $format_bold);
$maxlength[$i] = 17;
$worksheet->write($zeile, ++$i, "VERBAND", $format_bold);
$maxlength[$i] = 7;
$worksheet->write($zeile, ++$i, "GRUPPE", $format_bold);
$maxlength[$i] = 6;

$worksheet->write($zeile, ++$i, "ZGV", $format_bold);
$maxlength[$i] = 10;
$worksheet->write($zeile, ++$i, "ZGV Ort", $format_bold);
$maxlength[$i] = 14;
$worksheet->write($zeile, ++$i, "ZGV Datum", $format_bold);
$maxlength[$i] = 6;
$worksheet->write($zeile, ++$i, "ZGV Master", $format_bold);
$maxlength[$i] = 10;
$worksheet->write($zeile, ++$i, "ZGV Master Ort", $format_bold);
$maxlength[$i] = 14;
$worksheet->write($zeile, ++$i, "ZGV Master Datum", $format_bold);
$maxlength[$i] = 16;

$worksheet->write($zeile, ++$i, "STATUS", $format_bold);
$maxlength[$i] = 6;
$worksheet->write($zeile, ++$i, "STATUS IN ANDEREN STUDIENGÄNGEN", $format_bold);
$maxlength[$i] = 8;
$worksheet->write($zeile, ++$i, "EMail Intern", $format_bold);
$maxlength[$i] = 12;
$worksheet->write($zeile, ++$i, "TELEFON", $format_bold);
$maxlength[$i] = 3;
$worksheet->write($zeile, ++$i, "GRUPPEN", $format_bold);
$maxlength[$i] = 3;
$worksheet->write($zeile, ++$i, "UID", $format_bold);
$maxlength[$i] = 3;
$worksheet->write($zeile, ++$i, "ORGFORM", $format_bold);
$maxlength[$i] = 7;
$worksheet->write($zeile, ++$i, "VORNAMEN", $format_bold);
$maxlength[$i] = 8;
$worksheet->write($zeile, ++$i, "RT_PUNKTE1", $format_bold);
$maxlength[$i] = 10;
$worksheet->write($zeile, ++$i, "RT_PUNKTE2", $format_bold);
$maxlength[$i] = 10;
$worksheet->write($zeile, ++$i, "RT_GESAMTPUNKTE", $format_bold);
$maxlength[$i] = 18;
$worksheet->write($zeile, ++$i, "PRIORITÄT", $format_bold);
$maxlength[$i] = 8;

// UDF titles
$udf = new UDF();
$udfTitlesPerson = $udf->getTitlesPerson();
$udfTitlesPrestudent = $udf->getTitlesPrestudent();

foreach($udfTitlesPerson as $udfTitle)
{
	$worksheet->write($zeile, ++$i, $udfTitle['description'], $format_bold);
	$maxlength[$i] = mb_strlen($udfTitle['description']);
}

foreach($udfTitlesPrestudent as $udfTitle)
{
	$worksheet->write($zeile, ++$i, $udfTitle['description'], $format_bold);
	$maxlength[$i] = mb_strlen($udfTitle['description']);
}

$zeile++;

$ids = explode(';',$data);
$prestudent_ids = '';

foreach ($ids as $id)
{
	if ($id!='')
	{
		if ($prestudent_ids!='')
			$prestudent_ids .= ',';
		$prestudent_ids .= "'".$db->db_escape($id)."'";
	}
}

if ($prestudent_ids!='')
{
	// Student holen
	$qry = "SELECT *,";

	if ($udf->personHasUDF())
	{
		$qry .= " p.udf_values AS p_udf_values,";
	}
	if ($udf->prestudentHasUDF())
	{
		$qry .= " ps.udf_values AS ps_udf_values,";
	}

	$qry .= "		ps.studiengang_kz AS prestgkz,
					(
						SELECT UPPER(typ || kurzbz)
							FROM public.tbl_studiengang s
							WHERE studiengang_kz = ps.studiengang_kz
					) AS stgbez
				FROM public.tbl_prestudent ps
				JOIN public.tbl_person p USING(person_id)
		   LEFT JOIN public.tbl_student s USING(prestudent_id)
			   WHERE prestudent_id IN($prestudent_ids)
			ORDER BY nachname, vorname";

	if ($db->db_query($qry))
	{
		while($row = $db->db_fetch_object())
		{
			draw_content($row);
			$zeile++;
		}
	}
}

function draw_content($row)
{
	global $maxlength, $datum_obj;
	global $zeile, $worksheet;
	global $zgv_arr, $zgvmas_arr;
	global $studiensemester_kurzbz;
	global $udfTitlesPerson, $udfTitlesPrestudent, $udf;
	$db = new basis_db();

	$prestudent = new prestudent();
	$prestudent->getLastStatus($row->prestudent_id);
	$status = $prestudent->status_kurzbz;
	$orgform = $prestudent->orgform_kurzbz;
	$prio_relativ  = new prestudent();
	$prio_relativ = $prio_relativ->getRelativePriorisierungFromAbsolut($row->prestudent_id, $row->priorisierung);

	$i = 0;

	//Anrede
	if (mb_strlen($row->anrede) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($row->anrede);
	$worksheet->write($zeile, $i, $row->anrede);
	$i++;

	//Titelpre
	if (mb_strlen($row->titelpre) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($row->titelpre);
	$worksheet->write($zeile, $i, $row->titelpre);
	$i++;

	//Nachname
	if (mb_strlen($row->nachname) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($row->nachname);
	$worksheet->write($zeile, $i, $row->nachname);
	$i++;

	//Vorname
	if (mb_strlen($row->vorname) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($row->vorname);
	$worksheet->write($zeile, $i, $row->vorname);
	$i++;

	//Titelpost
	if (mb_strlen($row->titelpost) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($row->titelpost);
	$worksheet->write($zeile, $i, $row->titelpost);
	$i++;

	//Email Privat
	//ZustellEmailAdresse aus der Datenbank holen und dazuhaengen
	$qry_1 = "
		SELECT
			kontakt
		FROM
			public.tbl_kontakt
		WHERE
			kontakttyp='email'
			AND person_id=".$db->db_add_param($row->person_id)."
			AND zustellung=true
		ORDER BY kontakt_id DESC
		LIMIT 1";

	if ($db->db_query($qry_1))
	{
		if ($row_1 = $db->db_fetch_object())
		{
			if (mb_strlen($row_1->kontakt) > $maxlength[$i])
				$maxlength[$i] = mb_strlen($row_1->kontakt);
			$worksheet->write($zeile, $i, $row_1->kontakt);
		}
	}
	$i++;

	//Zustelladresse
	//Zustelladresse aus der Datenbank holen und dazuhaengen
	$qry_1 = "
		SELECT
			*
		FROM
			public.tbl_adresse
		WHERE
			person_id=".$db->db_add_param($row->person_id)."
	 		AND zustelladresse=true LIMIT 1";

	if($result_1 = $db->db_query($qry_1))
	{
		if($row_1 = $db->db_fetch_object($result_1))
		{
			if(mb_strlen($row_1->strasse)>$maxlength[$i])
				$maxlength[$i]=mb_strlen($row_1->strasse);
			$worksheet->write($zeile,$i, $row_1->strasse);
			$i++;

			if(mb_strlen($row_1->plz)>$maxlength[$i])
				$maxlength[$i]=mb_strlen($row_1->plz);
			$worksheet->writeString($zeile,$i, $row_1->plz);
			$i++;

			if(mb_strlen($row_1->ort)>$maxlength[$i])
				$maxlength[$i]=mb_strlen($row_1->ort);
			$worksheet->write($zeile,$i, $row_1->ort);
			$i++;

			if(mb_strlen($row_1->gemeinde)>$maxlength[$i])
				$maxlength[$i]=mb_strlen($row_1->gemeinde);
			$worksheet->write($zeile,$i, $row_1->gemeinde);
			$i++;

			if(mb_strlen($row_1->nation)>$maxlength[$i])
				$maxlength[$i]=mb_strlen($row_1->nation);
			$worksheet->write($zeile,$i, $row_1->nation);
			$i++;
		}
		else
			$i+=5;
	}
	else
		$i+=5;

	//Geburtsdatum
	if (mb_strlen($row->gebdatum) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($row->gebdatum);
	$worksheet->write($zeile, $i, $datum_obj->convertISODate($row->gebdatum));
	$i++;

	//Personenkennzeichen
	if (isset($row->matrikelnr))
	{
		if (mb_strlen($row->matrikelnr) > $maxlength[$i])
			$maxlength[$i] = mb_strlen($row->matrikelnr);
		$worksheet->writeString($zeile, $i, $row->matrikelnr);
	}
	$i++;

	//Staatsbuergerschaft
	if (mb_strlen($row->staatsbuergerschaft) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($row->staatsbuergerschaft);
	$worksheet->write($zeile, $i, $row->staatsbuergerschaft);
	$i++;

	//SVNR
	if (mb_strlen($row->svnr) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($row->svnr);
	$worksheet->write($zeile, $i, $row->svnr);
	$i++;

	//Ersatzkennzeichen
	if (mb_strlen($row->ersatzkennzeichen) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($row->ersatzkennzeichen);
	$worksheet->write($zeile, $i, $row->ersatzkennzeichen);
	$i++;

	//Geschlecht
	if (mb_strlen($row->geschlecht) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($row->geschlecht);
	$worksheet->write($zeile, $i, $row->geschlecht);
	$i++;

	//Studiengang
	if (mb_strlen($row->stgbez) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($row->stgbez);
	$worksheet->write($zeile, $i, $row->stgbez);
	$i++;

	$qry = "
	SELECT
		tbl_studentlehrverband.semester AS semester_studiensemester,
		tbl_student.semester AS semester_aktuell,
		*
	FROM
		public.tbl_studentlehrverband
		JOIN public.tbl_student USING(student_uid)
	WHERE
		prestudent_id=".$db->db_add_param($row->prestudent_id)."
		AND studiensemester_kurzbz=".$db->db_add_param($studiensemester_kurzbz);

	if ($db->db_query($qry))
	{
		if ($row_sem = $db->db_fetch_object())
		{
			$semester_aktuell = $row_sem->semester_aktuell;
			$semester_studiensemester = $row_sem->semester_studiensemester;
			$verband = $row_sem->verband;
			$gruppe = $row_sem->gruppe;
		}
		else
		{
			$semester_aktuell = '';
			$verband = '';
			$gruppe = '';
		}
	}
	//Semester im eingestellten Studiensemester
	if (isset($semester_studiensemester))
	{
		if (mb_strlen($semester_studiensemester) > $maxlength[$i])
			$maxlength[$i] = mb_strlen($semester_studiensemester);
		$worksheet->write($zeile, $i, $semester_studiensemester);
	}
	$i++;

	//Semester aktuell
	if (isset($semester_aktuell))
	{
		if (mb_strlen($semester_aktuell) > $maxlength[$i])
			$maxlength[$i] = mb_strlen($semester_aktuell);
		$worksheet->write($zeile, $i, $semester_aktuell);
	}
	$i++;

	//Verband
	if (isset($verband))
	{
		if (mb_strlen($verband) > $maxlength[$i])
			$maxlength[$i] = mb_strlen($verband);
		$worksheet->write($zeile, $i, $verband);
	}
	$i++;

	//Gruppe
	if (isset($gruppe))
	{
		if (mb_strlen($gruppe) > $maxlength[$i])
			$maxlength[$i] = mb_strlen($gruppe);
		$worksheet->write($zeile, $i, $gruppe);
	}
	$i++;

	//ZGV
	if ($row->zgv_code!='' && isset($zgv_arr[$row->zgv_code]))
	{
		if (mb_strlen($zgv_arr[$row->zgv_code]) > $maxlength[$i])
			$maxlength[$i] = mb_strlen($zgv_arr[$row->zgv_code]);
		$worksheet->write($zeile, $i, $zgv_arr[$row->zgv_code]);
	}
	$i++;

	//ZGV Ort
	if (mb_strlen($row->zgvort) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($row->zgvort);
	$worksheet->write($zeile, $i, $row->zgvort);
	$i++;

	//ZGV Datum
	if (mb_strlen($row->zgvdatum) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($row->zgvdatum);
	$worksheet->write($zeile, $i, $row->zgvdatum);
	$i++;

	//ZGV Master
	if ($row->zgvmas_code!='' && isset($zgvmas_arr[$row->zgvmas_code]))
	{
		if (mb_strlen($zgvmas_arr[$row->zgvmas_code]) > $maxlength[$i])
			$maxlength[$i] = mb_strlen($zgvmas_arr[$row->zgvmas_code]);
		$worksheet->write($zeile, $i, $zgvmas_arr[$row->zgvmas_code]);
	}
	$i++;

	//ZGV Master Ort
	if (mb_strlen($row->zgvmaort) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($row->zgvmaort);
	$worksheet->write($zeile, $i, $row->zgvmaort);
	$i++;

	//ZGV Master Datum
	if (mb_strlen($row->zgvmadatum) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($row->zgvmadatum);
	$worksheet->write($zeile, $i, $row->zgvmadatum);
	$i++;

	//Status
	if (mb_strlen($status) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($status);
	$worksheet->write($zeile, $i, $status);
	$i++;

	//Stati in anderen Studiengaengen
	$stati='';
	$qry_1 = "
		SELECT
			UPPER(typ::varchar(1) || kurzbz) as stg,
			get_rolle_prestudent(prestudent_id, null) as status
		FROM
			public.tbl_prestudent
			JOIN public.tbl_studiengang USING(studiengang_kz)
		WHERE
			person_id=".$db->db_add_param($row->person_id)."
			AND tbl_prestudent.studiengang_kz<>".$db->db_add_param($row->prestgkz);

	if ($db->db_query($qry_1))
	{
		while($row_1 = $db->db_fetch_object())
		{
			if ($stati!='')
				$stati.=', ';
			$stati.= $row_1->status.' ('.$row_1->stg.')';
		}
	}
	if (mb_strlen($stati) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($stati);
	$worksheet->write($zeile, $i, $stati);
	$i++;

	//Email Intern
	if (isset($row->student_uid))
	{
		if (mb_strlen($row->student_uid.'@'.DOMAIN) > $maxlength[$i])
			$maxlength[$i] = mb_strlen($row->student_uid.'@'.DOMAIN);
		$worksheet->write($zeile, $i, $row->student_uid.'@'.DOMAIN);
	}
	$i++;

	//Telefon
	$qry_1 = "
		SELECT
			kontakt
		FROM
			public.tbl_kontakt
		WHERE
			kontakttyp in('mobil','telefon','so.tel')
			AND person_id=".$db->db_add_param($row->person_id)."
			AND zustellung=true
		LIMIT 1";

	if ($db->db_query($qry_1))
	{
		if ($row_1 = $db->db_fetch_object())
		{
			if (mb_strlen($row_1->kontakt) > $maxlength[$i])
				$maxlength[$i] = mb_strlen($row_1->kontakt);
			$worksheet->writeString($zeile, $i, $row_1->kontakt);
		}
	}
	$i++;

	//Spezialgruppen
	$grps='';
	$qry_1 = "
		SELECT
			gruppe_kurzbz
		FROM
			public.tbl_student
			JOIN public.tbl_benutzergruppe ON (student_uid=uid)
		WHERE
			tbl_student.prestudent_id=".$db->db_add_param($row->prestudent_id)."
			AND tbl_benutzergruppe.studiensemester_kurzbz=".$db->db_add_param($studiensemester_kurzbz);

	if ($db->db_query($qry_1))
	{
		while($row_1 = $db->db_fetch_object())
		{
			if ($grps!='')
				$grps.=',';

			$grps.=$row_1->gruppe_kurzbz;
		}
	}
	if (mb_strlen($grps) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($grps);
	$worksheet->write($zeile, $i, $grps);
	$i++;

	//UID
	if (isset($row->student_uid))
	{
		if (mb_strlen($row->student_uid) > $maxlength[$i])
			$maxlength[$i] = mb_strlen($row->student_uid);
		$worksheet->write($zeile, $i, $row->student_uid);
	}
	$i++;

	//Orgform
	if (mb_strlen($orgform) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($orgform);
	$worksheet->write($zeile, $i, $orgform);
	$i++;

	//Vornamen
	if (mb_strlen($row->vornamen) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($row->vornamen);
	$worksheet->write($zeile, $i, $row->vornamen);
	$i++;


	//RT_Punkte1
	if (mb_strlen($row->rt_punkte1) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($row->rt_punkte1);
	$worksheet->write($zeile, $i, $row->rt_punkte1);
	$i++;

	//RT_Punkte2
	if (mb_strlen($row->rt_punkte2) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($row->rt_punkte2);
	$worksheet->write($zeile, $i, $row->rt_punkte2);
	$i++;

	//RT_Gesamtpunkte
	if (mb_strlen($row->rt_gesamtpunkte) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($row->rt_gesamtpunkte);
	$worksheet->write($zeile, $i, $row->rt_gesamtpunkte);
	$i++;
	
	//Priorisierung
	$prio = $prio_relativ.' ('.$row->priorisierung.')';
	if (mb_strlen($prio) > $maxlength[$i])
		$maxlength[$i] = mb_strlen($prio);
		$worksheet->write($zeile, $i, $prio);
	$i++;

	// UDF
	if (isset($row->p_udf_values))
	{
		$udfPerson = json_decode($row->p_udf_values);
		if (is_object($udfPerson)) $udfPerson = (array)$udfPerson;

		foreach ($udfTitlesPerson as $udfTitle)
		{
			$toWrite = $udf->encodeToString($udfPerson, $udfTitle);

			if (mb_strlen($toWrite) > $maxlength[$i])
			{
				$maxlength[$i] = mb_strlen($toWrite);
			}

			$worksheet->write($zeile, $i, $toWrite);

			$i++;
		}
	}

	if (isset($row->ps_udf_values))
	{
		$udfPrestudent = json_decode($row->ps_udf_values);
		if (is_object($udfPrestudent)) $udfPrestudent = (array)$udfPrestudent;

		foreach ($udfTitlesPrestudent as $udfTitle)
		{
			$toWrite = $udf->encodeToString($udfPrestudent, $udfTitle);

			if (mb_strlen($toWrite) > $maxlength[$i])
			{
				$maxlength[$i] = mb_strlen($toWrite);
			}

			$worksheet->write($zeile, $i, $toWrite);

			$i++;
		}
	}
}

// Die Breite der Spalten setzen
foreach($maxlength as $i => $breite)
	$worksheet->setColumn($i, $i, $breite + 2);

$workbook->close();

?>