问如何编写查询以接受来自搜索框的输入并从Wordpress db中进行搜索( MySql )

EN

$connect = mysqli_connect("localhost", "root", "", "mydb");
$output = ''; 
if(isset($_POST["query"]))
{
    $search = mysqli_real_escape_string($connect, $_POST["query"]);
    $query = "
        SELECT * FROM clients;
        WHERE Name LIKE '%".$search."%'
        OR Aadhar LIKE '%".$search."%' 
        OR Mobile LIKE '%".$search."%' 
        OR Company LIKE '%".$search."%' 
        OR Description LIKE '%".$search."%'
    ";
}
else
{
    $query = "SELECT * FROM clients ORDER BY Name";
}
$result = mysqli_query($connect, $query);
if(mysqli_num_rows($result) > 0)
{
    $output .= '
      <div class="table-responsive">
      <table class="table table bordered">
        <tr>
         <th>Name</th>
         <th>Aadhar</th>
         <th>Mobile</th>
         <th>Company</th>
         <th>Description</th>
        </tr>
    ';

    while($row = mysqli_fetch_array($result)
    {
        $output .= '
           <tr>
            <td>'.$row["Name"].'</td>
            <td>'.$row["Aadhar"].'</td>
            <td>'.$row["Mobile"].'</td>
            <td>'.$row["Company"].'</td>
            <td>'.$row["Description"].'</td>
           </tr>
        ';
    }
    echo $output;
}
else
{
    echo 'Data Not Found';
}