how to set category name for a post

Question

how to set category name for post: this is my code ,this is not working ,why?

    $post_title = $vname; 
    $categ='category name';
$post_content = '[newpage link="'.$videos.'"]';  
    $new_post = array(
      'ID' => '',
      'post_author' => $user->ID, 
      'post_category' => $categ,
      'post_content' => $post_content,
      'post_title' => $post_title,
      'post_status' => 'publish',

    );
$post_id = wp_insert_post($new_post);

Answer 1

The post_category parameter has to be an array of IDs (int).

http://codex.wordpress.org/Function_Reference/wp_insert_post#Parameters

Try get_category_by_slug to get the ID, then use it.

$category = get_category_by_slug( 'your-category' );
$new_post = array(
       ...
       'post_category' => array( $category->term_id )
    );

Alternatively, look into wp_set_object_terms or wp_set_post_terms, using the $post_id of the post you've just created.

If you need to add a category that is non-existent yet, create it using wp_create_category.

Good luck.