Pestalozzi Gymnasium Biberach Errors

Notice (8): Undefined offset: 0 [APP/Lib/mathebattle/aufgaben/kursstufe/geometrie/bewegungsaufgaben/two_objekte_gleiche_hoehe_aufgabe.php, line 57]

Code Context

            //ausrechnen Welche Gerade über welcher ist
            $lgs=$this->g1->setze_gleich_mit_ger($this->g2,0,2);
            $t_intersect=$lgs->solution[0]->to_float();

$fixed_vars = array(
	't_unit' => 's',
	's_unit' => 'm',
	'obj2' => 'die Seilbahngondel F2',
	'obj1' => 'die Drohne F1'
)
$s_factor = (int) 10
$t = (int) 4
$s = (int) 6
$rv1_a = array(
	(int) 0 => (int) 0,
	(int) 1 => (int) 0,
	(int) 2 => (float) 0.5
)
$prop1 = 'null'
$sv1_a = array(
	(int) 0 => (int) 1,
	(int) 1 => (int) 10,
	(int) 2 => (float) 0.5
)
$dh2 = (float) 0.4
$rv2_a = array(
	(int) 0 => (int) -3,
	(int) 1 => (int) -8,
	(int) 2 => (float) 0.4
)
$prop2 = (float) 0.375
$sv2_a = array(
	(int) 0 => (int) 19,
	(int) 1 => (int) 58,
	(int) 2 => (float) 1.4
)
$sv1 = object(Vector) {
	komponenten => array(
		(int) 0 => '1',
		(int) 1 => '10',
		(int) 2 => '0.5'
	)
}
$sv2 = object(Vector) {
	komponenten => array(
		(int) 0 => '19',
		(int) 1 => '58',
		(int) 2 => '1.4'
	)
}
$rv1 = object(Vector) {
	komponenten => array(
		(int) 0 => '0',
		(int) 1 => '0',
		(int) 2 => '0.5'
	)
}
$rv2 = object(Vector) {
	komponenten => array(
		(int) 0 => '-3',
		(int) 1 => '-8',
		(int) 2 => '0.4'
	)
}
$lgs = object(lgs) {
	koeff => array(
		(int) 0 => array(
			[maximum depth reached]
		),
		(int) 1 => array(
			[maximum depth reached]
		)
	)
	slow_koeff => array(
		(int) 0 => array(
			[maximum depth reached]
		),
		(int) 1 => array(
			[maximum depth reached]
		)
	)
	rows => (int) 2
	cols => (int) 3
	act_step => '<span class='lgs_explain'>Zeile (I):</span> 
			<math xmlns='http://www.w3.org/1998/Math/MathML'>
				<mrow>	
					<mtable>
					<mtr> <mtd> </mtd> <mtd><mo>+</mo><math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mn>3</mn></mrow>
					</math><mo>t</mo></mtd> <mtd><mo>=</mo></mtd><mtd> <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mn>18</mn></mrow>
					</math></mtd>
							<mtd></mtd></mtr> 
					</mtable>
					
				</mrow>
			</math><p class='lgs_solution'>
								t = <math xmlns="http://www.w3.org/1998/Math/MathML"><mrow><mn>6</mn></mrow>
					</math></p>'
	solution => array(
		(int) 1 => object(coeff) {}
	)
	sol_array => array()
	sol_dim => (int) 0
	rechenweg => null
	chars => array(
		(int) 0 => 's',
		(int) 1 => 't',
		(int) 2 => 'x<sub>3</sub>'
	)
	ohne_index => (int) 1
	[protected] romans => array(
		(int) 1 => 'I',
		(int) 2 => 'II',
		(int) 3 => 'III',
		(int) 4 => 'IV',
		(int) 5 => 'V',
		(int) 6 => 'VI',
		(int) 7 => 'VII'
	)
}

two_objekte_gleiche_hoehe_aufgabe::zufall_init() - APP/Lib/mathebattle/aufgaben/kursstufe/geometrie/bewegungsaufgaben/two_objekte_gleiche_hoehe_aufgabe.php, line 57
EduRandomtask::get_exercise_text() - APP/Model/EduRandomtask.php, line 84
EduRandomtasksController::overview() - APP/Controller/EduRandomtasksController.php, line 69
ReflectionMethod::invokeArgs() - [internal], line ??
Controller::invokeAction() - CORE/Cake/Controller/Controller.php, line 499
Dispatcher::_invoke() - CORE/Cake/Routing/Dispatcher.php, line 193
Dispatcher::dispatch() - CORE/Cake/Routing/Dispatcher.php, line 167
[main] - APP/webroot/index.php, line 118

Call to a member function to_float() on null

Error: An Internal Error Has Occurred.

Stack Trace

APP/Model/EduRandomtask.php line 84 → two_objekte_gleiche_hoehe_aufgabe->zufall_init()

            
            if($r_task['EduRandomtask']['applicationtexts']){
                $app_data=$this->EduRandomApplicationtext->get_data($r_task['EduRandomtask']['id'],$text_id); //array: 'text'=> ..., 'fixed_vars'=>array(..
                $aufgabe->zufall_init($app_data['fixed_vars']);
            } else { $aufgabe->zufall_init(); }

APP/Controller/EduRandomtasksController.php line 69 → EduRandomtask->get_exercise_text()

            $all_conts = $this->EduRandomtask->EduContent->find('all',array('conditions'=>array('EduContent.edu_theme_id'=>$id,'EduContent.type'=>'random'),'order'=>array('nr_in_theme')));            
            $theme = $this->EduRandomtask->EduContent->EduTheme->findById($id);            
            $params = array();
            foreach($all_conts as $cont) $params[]=$this->EduRandomtask->get_exercise_text($cont['EduContent']['id'],null,1);
            $this->set(compact('params','id','theme'));

[internal function] → EduRandomtasksController->overview()

CORE/Cake/Controller/Controller.php line 499 → ReflectionMethod->invokeArgs()

                    'action' => $request->params['action']
                ));
            }
            return $method->invokeArgs($this, $request->params['pass']);

CORE/Cake/Routing/Dispatcher.php line 193 → Controller->invokeAction()


        $response = $controller->response;
        $render = true;
        $result = $controller->invokeAction($request);
        if ($result instanceof CakeResponse) {

CORE/Cake/Routing/Dispatcher.php line 167 → Dispatcher->_invoke()

            ));
        }

        $response = $this->_invoke($controller, $request);
        if (isset($request->params['return'])) {

APP/webroot/index.php line 118 → Dispatcher->dispatch()

$Dispatcher = new Dispatcher();
$Dispatcher->dispatch(
    new CakeRequest(),
    new CakeResponse(array('charset' => Configure::read('App.encoding')))
);