} elseif (isset($_GET['editannotation']) && !empty($_GET['dbid'])) { // Edit PDF note text. echo $pdfHandler->editPDFNote($_GET['dbid'], $_GET['text']); } elseif (isset($_GET['savepdfnote']) && !empty($_GET['page']) && !empty($_GET['top']) && !empty($_GET['left'])) { // Save new PDF note. echo $pdfHandler->savePDFNote($_GET['page'], $_GET['top'], $_GET['left']); } elseif (isset($_POST['savepdfmarkers']) && !empty($_POST['page']) && !empty($_POST['markers'])) { // Save PDF markers. echo $pdfHandler->savePDFMarkers($_POST['page'], $_POST['markers']); } elseif (isset($_GET['getpdfmarkers'])) { $users = null; if (isset($_GET['users']) && $_GET['users'] === 'other') { $users = 'other'; } // Get PDF markers. echo $pdfHandler->getPDFMarkers($users); } elseif (isset($_GET['getpdfnotes'])) { $users = null; if (isset($_GET['users']) && $_GET['users'] === 'other') { $users = 'other'; } // Get PDF markers. echo $pdfHandler->getPDFNotes($users); } elseif (isset($_GET['downloadpdf'])) { $mode = null; $attachments = array(); if (isset($_GET['mode']) && $_GET['mode'] === 'download') { $mode = 'download'; } if (isset($_GET['attachments'])) { $attachments = $_GET['attachments'];