php - WP_Query->post_name returns null -

i'm trying post_name attribute wp_query($args) function in wordpress. if i'm using var_dump($wp_query); shows me post_name attribute not empty or null. title of post.

but if i'm trying echo using echo $wp_query->post_name; returns empty string.

this how define $wp_query:

$args = array('posts_per_page' => 5, 'tag' => 'general'); $wp_query = new wp_query( $args ); 

there posts has tag "general" cannot reason.

can please explain behaviour or tell me i'm doing wrong?

this because $wp_query isn't single post, posts match query args. means have loop on posts in query result in way. instance, can this:

$args = array('posts_per_page' => 5, 'tag' => 'general'); $wp_query = new wp_query( $args );  // posts query $posts = $wp_query->get_posts();  // loop through posts foreach( $posts $post ) {     echo $post->post_name; }