Doctrine\MongoDB\Aggregation\Stage\Operator::subtract PHP Method

The arguments can be any valid expression as long as they resolve to numbers and/or dates.

See also: http://docs.mongodb.org/manual/reference/operator/aggregation/subtract/

See also: Expr::subtract

public subtract ( mixed \| Expr $expression1, mixed \| Expr $expression2 )
$expression1	mixed \| Doctrine\MongoDB\Aggregation\Expr
$expression2	mixed \| Doctrine\MongoDB\Aggregation\Expr

    public function subtract($expression1, $expression2)
    {
        $this->expr->subtract($expression1, $expression2);
        return $this;
    }

Operator

public subtract ( mixed \| Expr $expression1, mixed \| Expr $expression2 )
$expression1	mixed \| Doctrine\MongoDB\Aggregation\Expr
$expression2	mixed \| Doctrine\MongoDB\Aggregation\Expr