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eichehome 2021-12-05 13:56:23 +01:00
parent 7402018df0
commit 9cd7882eb7
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<!DOCTYPE html>
<?php
/*
* Copyright (C) 2018 Christian Brüggen
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
/**
* Stellt eine Verbindung zu einer DB bereit
*
* @author Christian Brüggen
*/
class DBClass extends stdClass
{
/**
* Zeiger auf die DB
* @var PDO
*/
private $pdo = null;
/**
* Das Abgrage-Statement
* @var PDOStatement
*/
private $stmt = null;
/**
* Verbindet mit Server und DB
* @param string $dbname Name der Datenbank
* @param string $user Benutzername
* @param string $passwort Passwort des Benutzers
* @param string $host Adresse des Datenbankservers
*/
public function __construct($dbname, $user, $passwort, $host)
{
try {
$this->pdo = new PDO('mysql:host=' . $host . ';dbname=' . $dbname, $user, $passwort);
} catch (PDOException $e) {
echo $e->getMessage();
}
}
/**
* Führt eine SQL-Anweisung ohne Rückgabe eines Datensatzes aus
* @param string $querystring
* @param array $params
* @return boolean
*/
public function query($querystring, array $params = array())
{
try {
$this->stmt = $this->pdo->prepare($querystring);
return $this->stmt->execute($params);
} catch (PDOException $ex) {
$this->stmt = null;
} catch (Exception $ex) {
$this->stmt = null;
}
return false;
}
/**
* Führt eine SQL-Anweisung mit Rückgabe eines Datensatzes aus
* @param string $querystring
* @param array $params
* @return array
*/
public function select($querystring, array $params = array())
{
if ($this->query($querystring, $params)) {
return $this->stmt->fetchAll();
} else {
return array();
}
}
}

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<?php
/*
* Copyright (C) 2018 Christian Brüggen
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
class Datenbank extends DBClass
{
/**
*
* @param string $name
* @param string $passwort
* @return boolean
*/
public function checkLogin(string $name, string $passwort)
{
$sql = 'SELECT * FROM Test_v2 WHERE Name=:name AND Code=:passwort';
$params = array(
'name' => strtolower($name),
'passwort' => $passwort
);
$result = $this->select($sql, $params);
if (count($result) == 1) {
return true;
} else {
return false;
}
}
/**
*
* @param string $name
* @return boolean
*/
public function hasAlredySelected(string $name)
{
$sql = 'SELECT * FROM Test_v2 WHERE Name=:name AND Kurs IS NOT NULL AND Kurs2 IS NOT NULL AND Kurs3 IS NOT NULL ';
$params = array(
'name' => $name
);
$result = $this->select($sql, $params);
if (count($result) == 1) {
return true;
} else {
return false;
}
}
/**
*
* @return array strings
*/
public function selectKurse()
{
$sql = 'SELECT name, stunde FROM Kurse';
return $this->select($sql);
}
/**
*
* @param array $kurse
* @return boolean
*/
public function insertSelection(string $name, array $kurse)
{
if (count($kurse) == 3) {
$sql = 'UPDATE Test_v2 SET Kurs=:kurs1, Kurs2=:kurs2, Kurs3=:kurs3 WHERE name =:name';
$params = array(
'name' => $name,
'kurs1' => $kurse[0],
'kurs2' => $kurse[1],
'kurs3' => $kurse[2]
);
return $this->query($sql, $params);
} else {
return false;
}
}
/**
* Nichtmehr nötig
* @param string $name
* @return boolean
*/
/*public function updateHasAlredySelected(string $name)
{
return true;
}*/
}

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<!DOCTYPE html>
<?php
/*
* Copyright (C) 2018 Christian Brüggen
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
/**
* Wrapper für eine Session
*
* @author Christian Brüggen
*/
class Session
{
/**
* Konstrucktor
*/
public function __construct()
{
$this->start();
}
/**
* Setzt einen Wert für einen Key im Session-Array
* @param string $key Key
* @param string $value Wert
* @return string
*/
public function set(String $key, String $value = "")
{
return $_SESSION[$key] = $value;
}
/**
* Gibt den Wert für einen Key im Session-Array zurück
* @param string $key Key
* @return string
*/
public function get(String $key)
{
return $_SESSION[$key];
}
/**
* Zerstört eine Session und ihre Werte
*/
public function destroy()
{
session_destroy();
}
/**
* Startet eine Session
*/
public function start()
{
session_start();
}
}