Calculator

phpReport comes with 3 different calculator classes. The reason behind is that only nessessarty operations will be performed.

In most cases you don’t need the minimum or maximum value of an attribute. Identifying those values is time consuming. The same is true for the number of rows having a not null or a not zero value.

The classes provided are:

• CalculatorXS (default)

• Calculator

• CalculatorXL

The CalculatorXS class has the minimum functionality. It’s perfect to cumulate any value or to increment any counter. To increment a value (or better a counter) just call the inc() method. It’s the same as calling add(1) method.

The Calculator class don’t have the incrememt method but counts the not null and not zero values.

The CalculatorXL class extends the Calculator class and detects the minimum and maximum values of an attribute. Use the min() and max() methods to get these values.

The aggregate() method instantiates a calculator object which provides aggregate functions. The sheet() method instanditates a sheet colletor which holds many calculator objects.

Example

$rep = (new Report ($this))
->data('object')
->aggregate ('amount')
->aggregate ('price', fn($row, $rowKey) => $row->amount * $row->pricePerUnit);