Stamp Visibility
This demo will stamp a document with a text box which will only be visible if you print this pdf or in the printing preview (needs to be supported by the viewer application).
PHP
<?php // load and register the autoload function require_once __DIR__ . '/../../../../../bootstrap.php'; // let's get access to the file $reader = new SetaPDF_Core_Reader_File($assetsDirectory . '/pdfs/Brand-Guide.pdf'); // create a HTTP writer $writer = new SetaPDF_Core_Writer_Http('stamped.pdf', true); // let's get the document $document = SetaPDF_Core_Document::load($reader, $writer); // initiate a stamper instance $stamper = new SetaPDF_Stamper($document); // let's use a TrueType font for the stamp appearance: $font = new SetaPDF_Core_Font_TrueType_Subset( $document, $assetsDirectory . '/fonts/DejaVu/ttf/DejaVuSans-ExtraLight.ttf' ); // initialize a text stamp which is not shown in print $stamp = new SetaPDF_Stamper_Stamp_Text($font, 8); $stamp->setText("Downloaded: " . date("Y-m-d H:i") . "\nUser: tester\nEmail: test@example.com"); // set border color to dark gray $stamp->setBorderColor([0.2235, 0.3922, 0.6863]); // set border width to 0.5 which is very small $stamp->setBorderWidth(0.5); // set padding to 5 $stamp->setPadding(5); // set visibility to "print only" through this the stamp is only visible on printed pdfs $stamp->setVisibility(SetaPDF_Stamper_Stamp_Text::VISIBILITY_PRINT); /** * dont stamp pages first and last page */ function callbackAllOddPagesWithoutFirstAndLast($pageNumber, $pageCount) { return $pageNumber !== 1 && $pageNumber !== $pageCount && ($pageNumber & 1) === 1; } /** * dont stamp pages first and last page */ function callbackAllEvenPagesWithoutFirstAndLast($pageNumber, $pageCount) { return $pageNumber !== 1 && $pageNumber !== $pageCount && ($pageNumber & 1) === 0; } // add stamp to left top on every odd page (without first and last page) and adjust the position $stamper->addStamp($stamp, SetaPDF_Stamper::POSITION_LEFT_TOP, 'callbackAllOddPagesWithoutFirstAndLast', 45, -30); // add stamp to right top on every even page (without first and last page) and adjust the position $stamper->addStamp($stamp, SetaPDF_Stamper::POSITION_RIGHT_TOP, 'callbackAllEvenPagesWithoutFirstAndLast', -45, -30); // stamp the document with all previously added stamps $stamper->stamp(); // save and finish the resulting document $document->save()->finish();