config['root_path'];
#Get parameters from the function call
$src = isset($params['src']) ? str_replace(array($gCms->config['root_url'] . '/', '//'), array('', '/'), $params['src']) : '';
$original_src = isset($params['src']) ? $params['src'] : '';
$quality = isset($params['quality']) ? $params['quality'] : 90;
#Get source path
$path = $root_path . '/' . urldecode($src);
if (file_exists($path)) {
#Get source info
$pathinfo = pathinfo($path);
$extension = strtolower($pathinfo['extension']);
$destination = $root_path . '/tmp/cache/img-' . md5_file($path) . '.webp';
# If file already exists, return it
if (file_exists($destination) && strpos($_SERVER['HTTP_ACCEPT'], 'image/webp') !== false)
return str_replace($root_path . '/', '', $destination);
if (strpos($_SERVER['HTTP_ACCEPT'], 'image/webp') !== false) {
if ($extension == 'jpeg' || $extension == 'jpg') $image = imagecreatefromjpeg($path);
elseif ($extension == 'gif') $image = imagecreatefromgif($path);
elseif ($extension == 'png') {
$image = imagecreatefrompng($path);
imagepalettetotruecolor($image);
imagealphablending($image, true);
imagesavealpha($image, true);
} else return "Error: the image extension is wrong";
#webp image creation
if ($image !== false) imagewebp($image, $destination, $quality);
else return "Error: the image has not been created";
# If the browser supports webp. Hello Safari!
if (file_exists($destination) && strpos($_SERVER['HTTP_ACCEPT'], 'image/webp') !== false) {
#Return encoded image
return str_replace($root_path . '/', '', $destination);
} else {
return $original_src;
}
} else return $original_src;
} else {
return 'Error: the image path is not valid';
} //end if
} // End Function
/**
* Help text
*/
function smarty_cms_help_function_webp_image()
{
?>
What does this do?
This plugin converts an image to webp format.
How do I use it?
HTML: <img src="{webp_image src="uploads/simplex/images/cmsmadesimple-logo.png" quality="85"}" width="227" height="59"/>
You can use an absolute or relative url to the image. For Gallery:
<a class="group" href="{webp_image src=$image->file}" title="{$image->comment}" rel="prettyPhoto[{$galleryid}]"><img src="{webp_image src=$image->thumb}" alt="{$image->titlename}" /></a>
Plugin author: Yuri Haperski (wdwp@yandex.ru)
Version: 1.0
Change History:
20-03-2021 - Initial release (v1.0)
20-11-2021 - Some improvements (v1.1)