array ...

[karthikanov24]

hi

function formatCategories($categories, $parentId)
{
// $navCat stores all children categories
// of $parentId
$navCat = array();

// expand only the categories with the same parent id
// all other remain compact
$ids = array();
foreach ($categories as $category) {
	if ($category['cat_parent_id'] == $parentId) {
		$navCat[] = $category;
               
	}


	// save the ids for later use
	$ids[$category['cat_id']] = $category;

}	


print_r($ids[$category[0]]);

 

If i am printing the array using,

print_r($ids[$category[0]]);here 0 is the start key of the array(as shown in last line of codes)..OR print_r($ids[$category[12]]);

here 12 is the cat_id of a product...

 

I am getting notice as,Notice: Undefined offset: 0.

without out the display of expected output..

 

But if i use print_r($ids);

i get,

 

Array ( [12] => Array ( [cat_id] => 12 [cat_parent_id] => 0 [cat_name] => Cars [cat_image] => dce08605333d805106217aaab7f93b95.jpg [cat_description] => Expensive and luxurious cars ) [13] => Array ( [cat_id] => 13 [cat_parent_id] => 0 .................................etc....

 

And

if i use print_r($ids[$category['cat_id']]);after for each loop

i get,

Array ( [cat_id] => 17 [cat_parent_id] => 13 [cat_name] => Hunter X Hunter [cat_image] => 746e05a7a629d53bc488115a75ee35d9.jpg [cat_description] => Story about hunter and combat )

 

The question is why do i get notice of undefined offset after using those,print_r($ids[$category[0]]);(as shown in last line of codes)..OR print_r($ids[$category[12]]); statements instead of expected  output..

 

 

could you explain this please..

 

thanks

karthikanov24

 

 

 

 

 

[rajivgonsalves]

because the offset is not 0 it will be your category id