转义数据库选择查询中的特殊字符

我有以下查询，如果名称包含特殊字符，则该查询不起作用：

 case 'byMovie':
  $items_per_page = 20;
  $offset = 0;
  $page_count = 0;
  include('Connection.php');
  $query1 = $conn->prepare("
SELECT DISTINCT s.starName
              , s.starImdbID
              , s.movieName
              , p.posterLink 
           FROM star_film as s 
           LEFT 
           JOIN star_Posters as p 
             ON s.starImdbID = p.starImdbID  
          WHERE s.movieName LIKE :q
");
  $query1->execute(array(':q' => '%' . $searchText . '%'));
  $row_count = $query1->rowCount();
  $page_count = (int)ceil($row_count / $items_per_page);
  $page = min($page_count, filter_input(INPUT_GET, 'page', FILTER_VALIDATE_INT, array(
           'options' => array(
           'default'   => 1,
           'min_range' => 1,
          ),
      )));
       if($page > $page_count) { //double check that request page is in range
           $page = 1;     // error to user, maybe set page to 1
       }
   $offset = ($page - 1) * $items_per_page;
   $query = $conn->prepare("SELECT DISTINCT s.starName, s.starImdbID, s.movieName, p.posterLink FROM star_film as s LEFT JOIN star_Posters as p ON s.starImdbID = p.starImdbID  WHERE s.movieName LIKE :q LIMIT " . $offset . "," . $items_per_page);
   $query->execute(array(':q' => '%' . $searchText . '%'));
break;
}

例如，如果电影名称是"一个鱼的故事"，它会向我显示以下错误：

致命错误：未捕获异常"PDOException"，消息为'SQLSTATE[42000]：语法错误或访问冲突：1064您有SQL语法错误；查看与您的MySQL服务器版本，在第行"-20,20"附近使用正确的语法1'在/var/www/searchcast.php中：90堆栈跟踪：#0/var/www/searchcast.php（90）:PDO->准备（'SELECT DISTINCT…'）#1｛main｝在第90行的/var/www/searchcast.php中抛出

我试着按照这里的建议添加mysql_real_eescape_string（s.movieName），但也不起作用。

有人能帮帮我吗？

感谢