Queries are used to answer questions about the Money. They can return different values based on what you want.
You can also create and use your own money queries.
Let's take a look a
MoneyQuery in a little more detail.
<?php use SonsOfPHP\Component\Money\Query\Currency\IsEqualToCurrencyQuery; use SonsOfPHP\Component\Money\Currency; $currency = Currency::USD(); $currencyUSD = Currency::USD(); $currencyJPY = Currency::JPY(); // We create the new query and inject the dependencies $query = new IsEqualToCurrencyQuery($currency); // Both currencies have the same Currency Code, so we can say // they are equal $isEqual = $query->queryFrom($currencyUSD); // returns true // Another way to do the same thing is $isEqual = $currencyUSD->query($query); // returns true $isEqual = $currencyJPY->query($query); // returns false
Queries aren't just limited to
bool type of results. Running a query can return
any type of result. This means you could return an
array or even a