Our way: Constants

class Costumer 
{
   public float $amount;

   public function something() 
   {
       // Ok, and WTF means 98.45 ?
       if ($this->amount > 98.45) {
          ...
       }

   }

}

class Costumer 
{
   public float $amount;

   public const LIMIT = 98.45

   public function something() 
   {
       if ($this->amount > self::LIMIT) {
          ...
       }

   }

}

// If LIMIT is used across codebase put it on `.env`
LIMIT = 98.45


public function something() 
{
    if ($this->amount > config("app.limit")) {
          ...
    }
}