qrexample11.php
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<?php
// Include the library
require_once ('jpgraph/QR/qrencoder.inc.php');
 
// Example 11 : Generate postscript output
 
$data         = 'ABCDEFGH01234567'; // Data to be encoded
$version      = -1;  // -1 = Let the library decide version (same as default)
$corrlevel    = QRCapacity::ErrH; // Error correction level H (Highest possible)
$modulewidth  = 3;
 
// Create a new instance of the encoder using the specified
// QR version and error correction
$encoder = new QREncoder($version,$corrlevel);
 
// Use the image backend
$backend = QRCodeBackendFactory::Create($encoder, BACKEND_PS);
 
// Set the module size
$backend->SetModuleWidth($modulewidth);
 
// Store the barcode in the specifed file
$ps_str = $backend->Stroke($data);
 
echo '<pre>'.$ps_str.'</pre>';
?>