';
$width = isset($params['width']) ? $params['width'] : '100';
$height = isset($params['height']) ? $params['height'] : '100';
$data_uri = isset($params['data_uri']) ? $params['data_uri'] : false;
$path = isset($params['path']) ? $params['path'] : 'qr';
// get image from google charts api
$image_url_qr = 'https://chart.googleapis.com/chart?chs=' . $width . 'x' . $height . '&cht=qr&chl=' . $params['url'] . '&choe=UTF-8';
// generate image
$image_path_qr = $gCms -> config['image_uploads_path'] . '/' . $path . '/';
$image_filename_qr = md5(serialize($params)) . '.gif';
if(!file_exists($image_path_qr . $image_filename_qr) || $image_filename_qr == md5(serialize($params))) {
@mkdir($image_path_qr, 0755, true);
$image_to_fetch = file_get_contents($image_url_qr);
$local_image_file = fopen($image_path_qr . $image_filename_qr, 'w');
chmod($image_path_qr . $image_filename_qr, 0755);
fwrite($local_image_file, $image_to_fetch);
fclose($local_image_file);
}
// if file exists construct image tag
if(file_exists($image_path_qr)) {
// if param data_uri is not set show base64 image
if($data_uri != false) {
$get_image = $image_path_qr . $image_filename_qr;
$qr_image = $start_img .= '"data:image/gif;base64,' . base64_encode(file_get_contents($get_image)) . '"';
// else show gif image
} else {
$qr_image = $start_img .= '"' . $gCms -> config['image_uploads_url'] . '/' . $path . '/' . $image_filename_qr . '"';
}
$qr_image .= ' width="' . $width . '"';
$qr_image .= ' height="' . $height . '"';
if(!empty($params['alt'])) {
$alt = $params['alt'];
} else {
$alt = $params['url'];}
$qr_image .= ' alt="' . $alt . '"';
if(!empty($params['title'])) {
$title = $params['title'];
} else {
$title = $params['url'];
}
$qr_image .= ' title="' . $title . '"';
if(!empty($params['class'])) {
$qr_image .= ' class="' . $params['class'] . '"';
}
$qr_image .= $close_img;
} else {
$qr_image = 'Oh no. Something is wrong.
Image was not found.
';
}
if(isset($params['assign'])) {
$smarty -> assign(trim($params['assign']), $qr_image);
return ;
}
return $qr_image;
}
function smarty_cms_help_function_qr_image() {
?>
What does this do?
This plugin generates a simple QR Code using Google Charts API.
QR Codes are popular among smartphone user, where with help of QR Code you are able to easily access or save url specified in that code.
How do I use it?
Just insert the tag into your template/page like:
{qr_image url='http://www.domain.com' widht='120' height='120' title='some title' alt='alt text'}
What parameters does it take?
-
(required)
url - specify url to generate QR code from.
If using it with News or CGBlog module you could simply user url=$entry->url for example.
-
(optional)
width - is optional, default setting is 100px.
-
(optional)
height - is optional, default setting is 100px.
-
(optional)
path - is optional. You can specify a path where QR images should be saved, default is /uploads/images/qr.
This path is relative to /uploads/images.
-
(optional)
alt - alt tag for generated QR image.
-
(optional)
title - title tag for generated QR image.
-
(optional)
data_uri - default is disabled. Setting data_uri='1' will generate a base64 encoded image (usefull if you want to reduce http requests.)
Please note that older browser do not support base64 encoded images.
Author: Goran Ilic www.ich-mach-das.at
Version 1.0
Version 1.1
-
Change filename generation
Version 1.2
-
Fix width and height params, if none was specified, image couldn't be generated.
-
Create dir if path param was specified
- Generate new file if params were changed