/**
* Works out what size a requested image should be, based on request parameters
*
* The result of this function can be passed to get_dataroot_image_path to
* retrieve the filesystem path of the appropriate image
*/
function get_imagesize_parameters($sizeparam = 'size', $widthparam = 'width', $heightparam = 'height', $maxsizeparam = 'maxsize', $maxwidthparam = 'maxwidth', $maxheightparam = 'maxheight')
{
$size = param_imagesize($sizeparam, '');
$width = param_integer($widthparam, 0);
$height = param_integer($heightparam, 0);
$maxsize = param_integer($maxsizeparam, 0);
$maxwidth = param_integer($maxwidthparam, 0);
$maxheight = param_integer($maxheightparam, 0);
return imagesize_data_to_internal_form($size, $width, $height, $maxsize, $maxwidth, $maxheight);
}
/**
* Helper method
*/
private function get_size_from_options($options)
{
$prefix = '';
foreach (array('size', 'width', 'height', 'maxsize', 'maxwidth', 'maxheight') as $param) {
if (isset($options[$param])) {
${$param} = $options[$param];
$prefix .= $param . '-' . $options[$param] . '-';
} else {
${$param} = null;
}
}
return array(imagesize_data_to_internal_form($size, $width, $height, $maxsize, $maxwidth, $maxheight), $prefix);
}
