Classic ASP Requires Chilkat v11.7.0+

QR Code with Non-English Text (UTF-8 and ECI)

See more QR Code Examples

Demonstrates text outside ASCII. QrCode always stores text as UTF-8 bytes, which is what phones expect. A QR code can also say so explicitly with an ECI header: setting encoding.eci to 26 declares the bytes to be UTF-8, for readers that would otherwise assume another character set. The header costs a little space, and a few older readers do not understand it, so it is off by default. Classic ASP

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body>
<%
success = 0

'  This example requires the Chilkat API to have been previously unlocked.
'  See Global Unlock Sample for sample code.

'  The text is "Gruesse aus Muenchen" written with u-umlaut and sharp s.  It is given here with
'  JSON escapes only so that this source is plain ASCII.  Decode turns the escapes into characters.
set sbText = Server.CreateObject("Chilkat.StringBuilder")
success = sbText.Append("Gr\u00fc\u00dfe aus M\u00fcnchen")
success = sbText.Decode("json","utf-8")

set json = Server.CreateObject("Chilkat.JsonObject")
success = json.UpdateSb("payload.text",sbText)
success = json.UpdateString("output.path","qa_output/qr_utf8.png")
success = json.UpdateBool("output.overwrite",1)
success = json.UpdateString("output.return","none")

set fmt = Server.CreateObject("Chilkat.Formats")
set jsonOut = Server.CreateObject("Chilkat.JsonObject")
success = fmt.QrCode("generate",json,jsonOut)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( fmt.LastErrorText) & "</pre>"
    Response.End
End If

'  17 characters, three of which take two bytes in UTF-8.
Response.Write "<pre>" & Server.HTMLEncode( "characters: " & sbText.Length) & "</pre>"
Response.Write "<pre>" & Server.HTMLEncode( "bytes encoded: " & jsonOut.IntOf("symbols[0].payloadBytes")) & "</pre>"
Response.Write "<pre>" & Server.HTMLEncode( "ECI header: " & jsonOut.HasMember("symbols[0].selectedEncoding.eci")) & "</pre>"

'  Without an ECI header (qa_output/qr_utf8.png):

'  

'  The same text with an ECI header declaring UTF-8.
success = json.UpdateInt("encoding.eci",26)
success = json.UpdateString("output.path","qa_output/qr_utf8_eci.png")
success = fmt.QrCode("generate",json,jsonOut)
If (success = 0) Then
    Response.Write "<pre>" & Server.HTMLEncode( fmt.LastErrorText) & "</pre>"
    Response.End
End If

Response.Write "<pre>" & Server.HTMLEncode( "with encoding.eci = 26, ECI header: " & jsonOut.HasMember("symbols[0].selectedEncoding.eci") & ", value " & jsonOut.IntOf("symbols[0].selectedEncoding.eci")) & "</pre>"

'  With the ECI header (qa_output/qr_utf8_eci.png).  Both scan as the same text:

'  

'  Sample output:

'  characters: 17
'  bytes encoded: 20
'  ECI header: False
'  with encoding.eci = 26, ECI header: True, value 26

%>
</body>
</html>