set_option("searchpath={" . $searchpath . "}"); /* This means we must check return values of load_font() etc. */ $p->set_option("errorpolicy=return"); /* Open the document with the "Bookmarks" navigation tab visible */ if ($p->begin_document($outfile, "openmode=bookmarks") == 0) throw new Exception("Error: " . $p->get_errmsg()); $p->set_info("Creator", "PDFlib Cookbook"); $p->set_info("Title", $title ); /* Start page */ $p->begin_page_ext(0, 0, "width=a4.width height=a4.height"); /* Define the layer "English" and place some English text on it */ $layerEN = $p->define_layer("English", ""); $p->begin_layer($layerEN); $p->fit_textline("Our paper planes are the ideal way of passing the " . "time.", 30, 600, "fontname=NotoSerif-Bold fontsize=20"); /* Define the layer "German" which is hidden when opening the document * or printing it. Place a German image caption on that layer. */ $layerDE = $p->define_layer("German", "initialviewstate=false " . "initialprintstate=false"); $p->begin_layer($layerDE); $p->fit_textline("Unsere Papierflieger sind ein idealer Zeitvertreib.", 30, 600, "fontname=NotoSerif-Bold fontsize=20"); /* At most one of the "English" and "German" layers should be visible */ $p->set_layer_dependency("Radiobtn", "group={" . $layerEN . " " . $layerDE . "}"); /* Create a "SetOCGState" action which shows the English layer. Since * at most one layer may be visible we don't need to explicitly hide * the German layer. */ $action = $p->create_action("SetOCGState", "layerstate={on " . $layerEN . "}"); /* Create a bookmark which activate the action above to shows the layer * with the English text */ $p->create_bookmark("Show English", " action={activate=" . $action . "}"); /* Create a "SetOCGState" action which shows the German layer. Since * at most one layer may be visible we don't need to explicitly hide * the English layer. */ $action = $p->create_action("SetOCGState", "layerstate={on " . $layerDE . "}"); /* Create a bookmark which activate the action above to shows the layer * with the German text */ $p->create_bookmark("Show German", " action={activate=" . $action . "}"); /* Complete all layers */ $p->end_layer(); $p->end_page_ext(""); $p->end_document(""); $buf = $p->get_buffer(); $len = strlen($buf); header("Content-type: application/pdf"); header("Content-Length: $len"); header("Content-Disposition: inline; filename=layer_and_bookmarks.pdf"); print $buf; } catch (PDFlibException $e){ echo("PDFlib exception occurred:\n" . "[" . $e->get_errnum() . "] " . $e->get_apiname() . ": " . $e->get_errmsg() . "\n"); exit(1); } catch (Throwable $e) { echo("PHP exception occurred: " . $e->getMessage() . "\n"); exit(1); } $p = 0; ?>