Respond to image style updating.
This hook enables modules to update settings that might be affected by changes to an image. For example, updating a module specific variable to reflect a change in the image style's name.
$style: The image style array that is being updated.
Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.
function hook_image_style_save($style) {
// If a module defines an image style and that style is renamed by the user
// the module should update any references to that style.
if (isset($style['old_name']) && $style['old_name'] == variable_get('mymodule_image_style', '')) {
variable_set('mymodule_image_style', $style['name']);
}
}