wordpress 在栏目页 按标题模糊搜索

$title='';
if(isset($_GET['title'])){
$title=$_GET['title'];
} 


$args=array(
'post_status' => 'publish',
'post_type' => 'post',
    'order' => 'DESC',
    'cat' => $catid,
    'posts_per_page'=>12,
    's' => $title,
'paged'=>$paged
    );