php - Custom field value inside WP_Query -

i want wp_query, displays posts, have same custom field value display post.

this code:

    function show_other_posts() {         //get current custom field value         if( get_field('desktop_cat') ){             $redirect_value = the_field('desktop_cat');              //echo current custom field value debugging             echo $redirect_value;              //query posts same value             $redirect_args = array(                     'posts_per_page' => -1,                     'post_type'     => 'post',                     'meta_query' => array(                         array(                           'key' => 'desktop_cat',                           'value' => $redirect_value,                           'compare' => '='                         )                     )             );              //display post titles             $the_query = new wp_query ( $redirect_args );             if( $the_query->have_posts() ): while( $the_query->have_posts() ) : $the_query->the_post();             the_title();             endwhile;endif;             wp_reset_query();         };     }; 

the problem must 'value' => $redirect_value, because when enter value manually works well. there must problem variable.

any ideas?

thank much

the_field() echoes field value. should use get_field() instead (which returns, not echoes field value):

$redirect_value = get_field('desktop_cat');