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PHP Integrating PHP with Databases Using Relational Tables Fetching Many Relationships

Florian Glembotzki
PLUS
Florian Glembotzki
Courses Plus Student 4,370 Points
Posted by Florian Glembotzki
Florian Glembotzki
Courses Plus Student 4,370 Points

Code Challenge: Fetching Many Relationships - What is wrong?

Couldn't get this to work correctly. Where is my mistake?

index.php 
<?php

include "helper.php";

/*
 * helper contains the following variables:
 * $item is an array that contains details about the library item
 * $results is a PDOstatement object with our genre results.
 */

while ($row = $results->fetch(PDO::FETCH_ASSOC)){

  $item[$row["genres"]][] = $row["genre_id"];
}

1 Answer

Jason Anello
Jason Anello
Courses Plus Student 94,610 Points

Hi Florian,

The $item variable has a "genres" key which is where the genre associative array is stored.

You can access that with $item["genres"]. Then it's a matter of looping and getting each genre_id(key) and genre(value) and storing that in the "genres" array.

$item["genres"][$row["genre_id"]] = $row["genre"];

So each key in the "genres" array is a genre_id and the genre is the value at that key.

Let me know if it's still not clear.

Florian Glembotzki
Florian Glembotzki
Courses Plus Student 4,370 Points
Florian Glembotzki
Florian Glembotzki
Courses Plus Student 4,370 Points

Thank you Jason, seems that I have to improve my array knowledge. ;-)