PHP

laravel required only one of multiple fields not both

prohibited
The field under validation must be empty or not present.

prohibited_if:anotherfield,value,...
The field under validation must be empty or not present if the anotherfield field is equal to any value.

prohibited_unless:anotherfield,value,...
The field under validation must be empty or not present unless the anotherfield field is equal to any value.

prohibits:anotherfield,...
If the field under validation is present, no fields in anotherfield can be present, even if empty.

How to make one of two fields required in php laravel

$rules = array(
    'Email' => 'required_without:QQ',
    'QQ' => 'required_without:Email',
);