back'); // user data $filename = $PNG_TEMP_DIR.'test'.md5($_REQUEST['data'].'|'.$errorCorrectionLevel.'|'.$matrixPointSize).'.png'; QRcode::png($_REQUEST['data'], $filename, $errorCorrectionLevel, $matrixPointSize, 2); } else { //default data //echo 'You can provide data in GET parameter: like that

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'; QRcode::png('PHP QR Code :)', $filename, $errorCorrectionLevel, $matrixPointSize, 2); }