PHP array

[mo]

Hallo
ich habe folgendes Array

array(1) {
  [0]=>
  object(stdClass)#137 (16) {
    ["term_id"]=>
    &string(1) "4"
    ["name"]=>
    &string(8) "Angebote"
    ["slug"]=>
    &string(23) "handy-tauschen-angebote"
    ["term_group"]=>
    string(1) "0"
    ["term_taxonomy_id"]=>
    string(1) "4"
    ["taxonomy"]=>
    string(8) "category"
    ["description"]=>
    &string(0) ""
    ["parent"]=>
    &string(1) "5"
    ["count"]=>
    &string(1) "1"
    ["object_id"]=>
    string(2) "32"
    ["cat_ID"]=>
    &string(1) "4"
    ["category_count"]=>
    &string(1) "1"
    ["category_description"]=>
    &string(0) ""
    ["cat_name"]=>
    &string(8) "Angebote"
    ["category_nicename"]=>
    &string(23) "handy-tauschen-angebote"
    ["category_parent"]=>
    &string(1) "5"
  }
}

global $post;
$categories = get_the_category($post->ID);
var_dump($categories);

wie kann ich ["cat_name"] ausgeben?
komm net wirklich dran..
$categories->cat_name
$categories["cat_name"]
geht alles nicht.

 

[Junkee[]]

$categories[0]->cat_name