Array to pass in add_action or add_filter

[tazotodua]

there are times when we do:

add_action('wp_head', 'smth');
add_action('admin_head', 'smth');

function smh(){
  //...
}

It would be convenient to have an ability to pass the array:

add_action(['wp_head','admin_head'],  'smth');

...

Will this be considered? if so, i'll try to upload the patch.

[SergeyBiryukov]

Thanks for the ticket, we're already tracking this enhancement in #14280.

Per the reasons stated in that ticket and in comment:2:ticket:26704, there are currently no plans to implement this due to performance impact it would have without any gained benefit for almost every existing use of the functions.