Creates image tag that contains QR Code

qr.cfc

component output="no" name="qr" {
  function encode(required string message) {
    var url = "http://chart.apis.google.com/chart";
    url &= "?cht=qr&chs=200x200";
    url &= "&chl=#message#";
    
    return image_tag(url,200,200,message);
  }
  
  function image_tag(url,w,h,alt) {
    return '<img src="#url#" width="#w#" height="#h#" alt="#alt#" />';
  }
}

qr_demo.cfm

<h1>QR Code Demo</h1>
<cfset qr = new qr() />
<cfoutput>
#qr.encode("http://cdpr.ca.gov")#
</cfoutput>