Why is this array not working?

Question

So first I am trying to get all pictures from content to take first picture from content and set it as features image if such is not set. I found part of thi online, it seems that this makes loop somehow (i do not get it how actually)

array(1) {  
    [0]=>
    array(4) {
    [0]=>    string(273) "whole image tag with alt"
    [1]=>    string(234) "whole image tag with alt"
    [2]=>    string(202) "whole image tag with alt"
    [3]=>    string(236) "whole image tag with alt"
  }
}

So ... when i uncomment print_r($result); i do get an array that looks like this above. How to access first image tag? Maybe even access src or alt part of that tag? I tried to

echo $result[0];

but i got nothing. Why count is presenting 1 as answer and not 4?

        global $wp_query;
        $post = $wp_query->post;
        $page_id = $post->ID; // page ID
        $page_object = get_page( $page_id ); // page stuff
        //$author_id = $post->post_author; // author ID
        //$author_name = get_the_author_meta( 'display_name', $author_id);
        $page_content = $page_object->post_content;


        //first check all img tags in text              
        preg_match_all('/<img[^>]+>/i',$page_content, $result); 

        print_r($result);


        echo count($result);

Answer 1

Your array is actually two dimensional. It's in two levels: an array containing an array of four strings.

Try echo $result[0][0];