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

You should simply store the return value in a variable:

$deliveryPrice = getDeliveryPrice(12);
echo $deliveryPrice; // will print 20

The $deliveryPrice variable above is a different variable than the $deliveryPrice inside the function. The latter is not visible outside the function because of variable scope.

Answer 2

<?php
function getDeliveryPrice($qew){
   global $deliveryPrice;
    if ($qew=="1"){
        $deliveryPrice="60";
    } else {
        $deliveryPrice="20";
    }
    //return $deliveryPrice;                          
}
// Assuming these two next lines are on external pages..
getDeliveryPrice(12);
echo $deliveryPrice; // It should return 20

?>

Answer 3

<?
function getDeliveryPrice($qew){
    if ($qew=="1"){
        $deliveryPrice="60";
    } else {
        $deliveryPrice="20";
    }
    return $deliveryPrice;                          
}

$price = getDeliveryPrice(12);
echo $price;

?>

Answer 4

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();