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PHP Build a Basic PHP Website (2018) Listing and Sorting Inventory Items Displaying Categories

Flo Tubes
Flo Tubes
5,110 Points
Posted by Flo Tubes
Flo Tubes
5,110 Points

errormessage:Warning: Invalid argument supplied for foreach() in /home/treehouse/workspace/catalog.php on line 38

I always get this error message even tho my Code is just like the one in the Video.

... <ul class="items"> <?php $categories = array_category($catalog,$section); foreach($categories as $id){ echo get_item_html($id,$catalog[$id]); }...

2 Answers

Nathan Ward
Nathan Ward
7,907 Points
Nathan Ward
Nathan Ward
7,907 Points

Hi,

It seems there could be a problem with the array_category() function, if you could post the code you have for this so I could help you more. You could also look back at the video to compare the function you have and the function that is created in the video.

Sue Dough
Sue Dough
35,800 Points
Sue Dough
Sue Dough
35,800 Points

Check if its an array first

<?php

if ( is_array($categories) {
  // your code
} else {
  echo "Not an array";
}

This will prevent errors but may not be what you need for the quiz. You could be doing something else wrong or just have no categories? However you should almost always add fallback in the real world on arrays to avoid errors.