allowed_tags(); } public function allowed_tags() { global $allowedposttags; $allowedposttags['canvas'] = array( 'class' => array(), 'id' => array(), 'style' => array(), 'width' => array(), 'height' => array(), ); } public function allowed_css($allowed_attr) { $new_allowed_attr = array( 'background-position', 'background-attachment', 'background-size', 'background-repeat', 'opacity', 'flex-direction', 'flex-wrap', 'justify-content', 'align-content', 'align-items', 'order', 'flex', 'align-self', ); foreach ($new_allowed_attr as $key => $value) { if (!in_array($value, $allowed_attr)){ $allowed_attr[] = $value; } } return $allowed_attr; } }