Question

I’ve got this array $all_regions = system_region_list($theme);

some values are ‘Sidebar first’ ‘Sidebar second’, they should become ‘sidebar_first’ ‘sidebar_second’

any ideas?

Answer 1

foreach ($all_regions as $key => $value){
   $all_regions[$key] = strtolower(str_replace(' ', '_', $value));
}

php.net – str_replace()

Edit

Even better would be the following (I think), because it will be faster because of the internal value pointer. (I will benchmark this)

foreach ($all_regions as &$value){
   $value = strtolower(str_replace(' ', '_', $value));
}