You must select at least one data to encode.'; } else { update_option("qrcode_encoded_data_options", $_POST["qrcode_encoded_data_options"]); } if (empty($_POST["qrcode_image_height"])) { update_option("qrcode_image_height", ""); } else { update_option("qrcode_image_height", $_POST["qrcode_image_height"]); } if (empty($_POST["qrcode_encoding"])) { update_option("qrcode_encoding", ""); } else { update_option("qrcode_encoding", $_POST["qrcode_encoding"]); } qrcode_wp_plugin::generate_test_qrcode_img(); } if (isset($_POST["update_params"])) { update_option("qrcode_version", $_POST["qrcode_version"]); update_option("qrcode_ecc_level", $_POST["qrcode_ecc_level"]); update_option("qrcode_module_size", $_POST["qrcode_module_size"]); // update_option("qrcode_quietzone", $_POST["qrcode_quietzone"]); qrcode_wp_plugin::generate_test_qrcode_img(); } if (isset($_POST["re-generate"])) { qrcode_wp_plugin::generate_test_qrcode_img(); } // Initialization $qrcode_lib_path = get_option("qrcode_lib_path"); $qrcode_image_path = get_option("qrcode_image_path"); $qrcode_encoded_data_options = get_option("qrcode_encoded_data_options"); $qrcode_image_height = get_option("qrcode_image_height"); $qrcode_encoding = get_option("qrcode_encoding"); $qrcode_version = get_option("qrcode_version"); $qrcode_ecc_level = get_option("qrcode_ecc_level"); $qrcode_module_size = get_option("qrcode_module_size"); //$qrcode_quietzone = get_option("qrcode_quietzone"); if (empty($qrcode_image_path)) { $qrcode_image_path = DEFAULT_IMAGE_PATH; } if (empty($qrcode_version)) { $qrcode_version = "0"; } if (empty($qrcode_ecc_level)) { $qrcode_ecc_level = "M"; } if (empty($qrcode_module_size)) { $qrcode_module_size = "5"; } //if (empty($qrcode_quietzone)) { // $qrcode_quietzone = "5"; //} ?>

QR code for Wordpress options

To make QR code works for your blog, there are three steps:

  1. Download the QR code PHP library from this site (or alternatively, from my site, and extract it to where your web server can access it.
  2. Complete the options in this page, and make sure that the test image can be generated.
  3. Modify your theme to show the generated QR codes for each of your blog articles. This is a more difficult step and you have to be familiar with HTML and PHP to do so. Open index.php and single.php, etc, and identify where you want to place the QR code image, then insert this PHP code snippet:
    <?php qrcode_wp_plugin::get_qrcode_img_link(); ?>

QR code library location

State where you have put the QR code library. If you have not yet downloaded the QR code library, you can get it from the original site, or from my site, and extract it to where the web server can access it. Make sure that you have entered the path correctly, otherwise you will get "Call to undefined function" errors when generating the image.


0 && !file_exists($qrcode_lib_path)) { ?> "" not found.

Image files location

State where to store the generated image files. This directory is relative to your Wordpress installation. You must create the directory on the server by yourself, the plugin will not do that for you. The directory must be writeable by the web server (use chmod, chown or chgrp to achieve that if you are running Linux/Unix flavor).


Recommended: /wp-content/qrcode

Options

Define what data to be encoded in the QR code image:   /> URL   /> Title   /> Post time

If you think the output image is too big or too small, you can resize it by putting the height of the image you wish below. As QR code is square-shaped, the height and width are the same, so you just need to supply the height.

Default: empty

You can set the text encoding of the QR codes. If you leave the following field blank, your blog's default encoding will be used, if you are not sure what it is, see Options › Reading. (Acceptable encodings are shown in this page).

Default: empty

QR code parameters

You can fine tune various parameters of the generated QR code images.

*/ ?>
(Default: Auto)
(Default: M)
(Default: 3)
(Default: 5)

Test Image

Press the "Re-generate Test Image" button to re-generate a sample QR code image by using the above settings.


Sample image (resized)

Sample image (original size)

Data in the image (testing data):