Linux Ubuntu中的PHP QR Code类错误

Question

PHP QR Code gives the following error when executing even the most basic QR Code generation example.

"Fatal error: Class 'QRcode' not found".

I have copied the entire PHP QR Code folder to the my var/www directory but still no solution.

Sample

 <?php

include('phpqrcode/qrlib.php');

QRcode::png('PHP QR Code :)');
?>

Answer 1

//give the full path if you have linux

include('/var/www/phpqrcode/qrlib.php');

//or windows wamp or xampp

include('c://wamp/phpqrcode/qrlib.php');

//check the class is exist or not
if(class_exists('QRcode'))
{
    QRcode::png('PHP QR Code :)');

}else{

    echo 'class is not loaded properly';
}