PHP Function to return string

Question

I am fairly new to PHP. I have a function which checks the cost of price. I want to return the variable from this function to be used globally:

Answer 1

As some alrady said, try using classes for this.

class myClass
{
    private $delivery_price;

    public function setDeliveryPrice($qew = 0)
    {
        if ($qew == "1") {
            $this->delivery_price = "60";
        } else {
            $this->delivery_price = "20";
        }
    }

    public function getDeliveryPrice()
    {
        return $this->delivery_price;
    }
}

Now, to use it, just initialize the class and do what you need:

$myClass = new myClass();
$myClass->setDeliveryPrice(1);

echo $myClass->getDeliveryPrice();