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file_put_contents - [internal], line ??
Cake\Log\Engine\FileLog::log() - CORE/src/Log/Engine/FileLog.php, line 133
Cake\Log\Log::write() - CORE/src/Log/Log.php, line 384
Cake\Log\Log::info() - CORE/src/Log/Log.php, line 517
App\Controller\AppController::beforeFilter() - APP/Controller/AppController.php, line 146
App\Controller\PagesController::beforeFilter() - APP/Controller/PagesController.php, line 100
Cake\Event\EventManager::_callListener() - CORE/src/Event/EventManager.php, line 416
Cake\Event\EventManager::dispatch() - CORE/src/Event/EventManager.php, line 393
Cake\Controller\Controller::dispatchEvent() - CORE/src/Event/EventDispatcherTrait.php, line 110
Cake\Controller\Controller::startupProcess() - CORE/src/Controller/Controller.php, line 502
Cake\Http\ActionDispatcher::_invoke() - CORE/src/Http/ActionDispatcher.php, line 114
Cake\Http\ActionDispatcher::dispatch() - CORE/src/Http/ActionDispatcher.php, line 93
Cake\Routing\Dispatcher::dispatch() - CORE/src/Routing/Dispatcher.php, line 60
[main] - ROOT/webroot/index.php, line 36
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Warning (2): file_put_contents(/home/pdemos/sales.physicsdemos/logs/audit.log) [<a href='https://secure.php.net/function.file-put-contents'>function.file-put-contents</a>]: failed to open stream: Permission denied [CORE/src/Log/Engine/FileLog.php, line 133]
file_put_contents - [internal], line ??
Cake\Log\Engine\FileLog::log() - CORE/src/Log/Engine/FileLog.php, line 133
Cake\Log\Log::write() - CORE/src/Log/Log.php, line 384
Cake\Log\Log::info() - CORE/src/Log/Log.php, line 517
App\Controller\AppController::beforeFilter() - APP/Controller/AppController.php, line 146
App\Controller\PagesController::beforeFilter() - APP/Controller/PagesController.php, line 100
Cake\Event\EventManager::_callListener() - CORE/src/Event/EventManager.php, line 416
Cake\Event\EventManager::dispatch() - CORE/src/Event/EventManager.php, line 393
Cake\Controller\Controller::dispatchEvent() - CORE/src/Event/EventDispatcherTrait.php, line 110
Cake\Controller\Controller::startupProcess() - CORE/src/Controller/Controller.php, line 502
Cake\Http\ActionDispatcher::_invoke() - CORE/src/Http/ActionDispatcher.php, line 114
Cake\Http\ActionDispatcher::dispatch() - CORE/src/Http/ActionDispatcher.php, line 93
Cake\Routing\Dispatcher::dispatch() - CORE/src/Routing/Dispatcher.php, line 60
[main] - ROOT/webroot/index.php, line 36
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if (!$mask) {return file_put_contents($pathname, $output, FILE_APPEND);}
$level = 'warning'
$message = 'Headers already sent in /home/pdemos/sales.physicsdemos/vendor/cakephp/cakephp/src/Error/Debugger.php:850'
$context = [
'scope' => []
]
$output = '2025-07-12 06:43:21 Warning: Headers already sent in /home/pdemos/sales.physicsdemos/vendor/cakephp/cakephp/src/Error/Debugger.php:850
'
$filename = 'error.log'
$pathname = '/home/pdemos/sales.physicsdemos/logs/error.log'
$mask = null
file_put_contents - [internal], line ??
Cake\Log\Engine\FileLog::log() - CORE/src/Log/Engine/FileLog.php, line 133
Cake\Log\Log::write() - CORE/src/Log/Log.php, line 384
Cake\Log\Log::warning() - CORE/src/Log/Log.php, line 469
Cake\Http\Response::sendHeaders() - CORE/src/Http/Response.php, line 517
Cake\Http\Response::send() - CORE/src/Http/Response.php, line 492
Cake\Routing\Dispatcher::dispatch() - CORE/src/Routing/Dispatcher.php, line 65
[main] - ROOT/webroot/index.php, line 36
Warning: file_put_contents(/home/pdemos/sales.physicsdemos/logs/error.log) [function.file-put-contents]: failed to open stream: Permission denied in /home/pdemos/sales.physicsdemos/vendor/cakephp/cakephp/src/Log/Engine/FileLog.php on line 133 The Education Group - Home
THE 600 VIDEOS OF THE ENCYCLOPEDIA OF PHYSICS DEMONSTRATIONS in English, Spanish and Portuguese considered to be the most valuable in teaching physics and physical science to students in universities, secondary schools and also to younger students. With optional subtitles and accompanied by explanations, illustrations, correlations and other helpful information, our website provides comprehensive, easy to use search tools to find and access the best possible videos for your lessons, MOODLE included online and on microprocessors licensed allows rich interaction and collaboration among teachers and students.
High school university edition
online
YEARLY LICENSES FOR STUDENTS and PROFESSORS
01 - 500 users at $24.00 per user with a minimum of $2400.
500 users at $12,000 + $20.00 for each additional user.
Virtual Servers for acquisition in perpetuity
Up to 5 Students and Professors using simultaneously - $4000.00
Up to 10 Students and Professors using simultaneously - $6000.00
Middleschool Edition
online
YEARLY LICENSES FOR STUDENTS and PROFESSORS
01 - 500 users at $16.00 per user with a minimum of $1600.
500 users at $8000 + $12.00 for each additional user.
Virtual Servers for acquisition in perpetuity
Up to 5 Students and Professors using simultaneously - $1750
Up to 10 Students and Professors using simultaneously - $2500.00