Custom Field Query One
$meta_query = array( 'relation' => 'AND', array( 'key' => 'allowed_sites', 'value' => '1234', 'compare' => 'LIKE', ), );
$meta_query = array( 'relation' => 'AND', array( 'key' => 'allowed_sites', 'value' => '1234', 'compare' => 'LIKE', ), );