$str = "test1@gmail.com name1 surname1 patronymic1n
test2@gmail.com name2 surname2 patronymic2n
test3@gmail.com name3 surname3 patronymic3n
test4@gmail.com name4 surname4 patronymic4"

foreach(explode("n", $str as array)){
  $list($email, $name, $surname, $patronymic) = explode(' ', $array){
       $final = ['email'=>$email, 'value'=>$name.' '.$surname.' '.$patronymic];
   }
}