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PHP Build a Simple PHP Application Integrating with PayPal Forms, Arrays, and Get Variables

Jeff Styles
Jeff Styles
2,784 Points
Posted by Jeff Styles
Jeff Styles
2,784 Points

Confused by quiz question - (isset($flavors [$_get["id"] ]

The question is as follows - I visit my flavor.php file with an extra variable in the web address, like this: http://localhost/flavor.php?id=1

If my flavor.php file has the code shown below, what does it output? 

<?php
$flavors = array();

$flavors[1] = "Cake Batter";

$flavors[2] = "Cookie Dough";

if (isset($_GET["id"])) {

    if (isset($flavors[$_GET["id"]])) {

        echo $flavors[$_GET["id"]];

    } else {

        echo "B";

    }

} else {

    echo "A";

}

?>

The line that has me quite confused seems to be

<?php
 if (isset($flavors[$_GET["id"]])) {

I understand that the $_GET id is set in the url and has a value of 1. What i don't understand is how the $flavors[$_get["id"]] is set?

I see an array with 2 index numbers, but don't see how the $_get id is correlating to those keys..

In the previous lesson we used a line of code such as $product_id = $_GET["id"];

Please help me understand this.

Thanks!

Ted Sumner
Ted Sumner
Courses Plus Student 17,967 Points

Edited to format code.

1 Answer

Henrik Rasmussen
Henrik Rasmussen
Courses Plus Student 4,609 Points

the $_get[id] is set by the ?1 in the browser and the $flavors[$_get["id"]] is set when the $_get[id] is = 1 as ($flavors[1] = "Cake Batter";)