PHP Code generate QRCODE

$PNG_TEMP_DIR ='ypathfile/';
    include "qrlib.php";   
   
    if (!file_exists($PNG_TEMP_DIR))
        mkdir($PNG_TEMP_DIR);
   
    $NF=$id_peserta.'.png';
    $filename = $PNG_TEMP_DIR.$NF;
echo $filename;

    $errorCorrectionLevel = 'L';//'L','M','Q','H'
    $matrixPointSize = 10;

    QRcode::png($id_peserta, $filename, $errorCorrectionLevel, $matrixPointSize, 2); 

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