DAverage.php

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<?php
 
namespace PhpOffice\PhpSpreadsheet\Calculation\Database;
 
use PhpOffice\PhpSpreadsheet\Calculation\Statistical\Averages;
 
class DAverage extends DatabaseAbstract
{
    public static function evaluate($database, $field, $criteria)
    {
        $field = self::fieldExtract($database, $field);
        if ($field === null) {
            return null;
        }
 
        return Averages::average(
            self::getFilteredColumn($database, $field, $criteria)
        );
    }
}