duucmeister on "Can't get a WP query working"

Please find the code below:

if ($_POST['achternaam'] != '') { $this->input_name = $_POST['achternaam']; }
if ($_POST['provincie'] != '' && $_POST['provincie'] != 'Alle provincies') { $meta_query[] = array('key' => 'provincie', 'value' => $_POST['provincie'], 'compare' => 'LIKE'); }
if ($_POST['modaliteit'] != '') { $meta_query[] = array('key' => 'modality', 'value' => $_POST['modaliteit'], 'compare' => 'LIKE'); }
if ($_POST['plaats'] != '') {
   $meta_query[] = array('relation' => 'OR',
      array('key' => 'city', 'value' => $_POST['plaats'], 'compare' => 'LIKE'),
      array('key' => 'city2', 'value' => $_POST['plaats'], 'compare' => 'LIKE')
   );
}

$args = array(
    'role'            => 'Therapeut',
    'posts_per_page'  => 1000,
    'exclude'         => array(1),
    'meta_query'      => $meta_query
);