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PHP

Posted by Gremyko Coleman
Gremyko Coleman
9,756 Points

where is the data for the variable $category coming from?

https://teamtreehouse.com/library/displaying-categories

function array_category($catalog,$category){ $output = array();

        foreach($catalog as $id => $item){
        if (strtolower($category) == strtolower($item["category"])){
                        $output[] = $id;
              }
        }
        return $output;

}

In the video when Alena is first setting up the function array_category($catalog,$category)

she passes through a variable name $category , where is this data coming from so that it will match the $item["category"] from the catalog array to get added to the array output, inside of the foreach loop? I am confused because I see that the $category variable isn't used on the index.php or catalog.php page at all, its only mentioned in the functions.php page.

1 Answer

Jennifer Nordell
seal-mask
STAFF
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher
Jennifer Nordell
.a{fill-rule:evenodd;}techdegree
Jennifer Nordell
Treehouse Teacher

Hi there! Remember that a parameter is a temporary variable for that function. She calls the function in catalog.php and sends in the $catalog and the $section. The $section is sent in to match the $category parameter. You can see this in 4:08 of the video on line 31.

Hope this helps! :sparkles:

Gremyko Coleman
Gremyko Coleman
9,756 Points

Oh, now I see, I thought it would be the same as the $section variable, but I wasn't sure since it on the functions.php page, it make sense now, thanks , Jennifer.