Instructions for use

Shortcode
The following shortcode command can be inserted into any page, post or widget:

• [show-qr-code] displays a tree at the shortcode position. Optional arguments can be included to influence the behaviour of the QR code using [show-qr-code arg1="value1" arg2="value2" ...]

  Usage
  The following arguments can be used in the shortcode or as POST/GET arguments:

• [qrdata=""] The data to encode. The defult is to use the current page or post URL.
• [file=null] The filename and path to create a media file.
• [ecc="H"] The error coding:

• QR Code ECC LEVEL L : 7% of the data can be restored.
• QR Code ECC LEVEL M : 15% of the data can be restored.
• QR Code ECC LEVEL Q : 25% of the data can be restored.
• QR Code ECC LEVEL H : 30% of the data can be restored.

• [pixel_size="2"]
• [frame_size="5"]

  Word Press Developers
  The QR code can be called using the class WlfC_QRCode. The following are available methods and arguments:

• All of the arguments in the Usage section are available e.g. [show-qr-code qrdata="xxx"] is called as $class->qrdata="";
• Method Build_QRCode() returns the QR code as an HTML IMG tag