在MATCH之后添加2行时，FULL TEXT查询将不起作用

Question

Following problem: If I add in the query after MATCH only text or only title, the query works fine and I get a array with the values. But when I added after MATCH the two rows title and text like that MATCH (title, text) the query wont works and I get Undefined variable: result. I cant find the problem by myself and I think its the right syntax. My error:

SQLSTATE[HY000]: General error: 1191 Can't find FULLTEXT index matching the column list

Both title and text have FULLTEXT index how I written above...

    $keywordsonetoeight = implode(',', $keywordse[0]); 
                try {
                        $dbh = new PDO("mysql:host=$hostname;dbname=loginsystem",$user,$password);

                        $dbh->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION); // 
                         $sql = "SELECT id, autorid, autor, title, text, time 
FROM posts 
WHERE MATCH (title, text) AGAINST ('$keywordsonetoeight')
ORDER BY id DESC"; 
  if ($res = $dbh->query($sql)) {// need to add this line in your code
      // then after fetchColumn
     $result = $res->fetchAll();
   }

Answer 1

The error message indicates that you do not have the appropriate fulltext index. Probably you indexed title and text columns individually, but now you are trying to do a fulltext search on both of them, which requires a combined fulltext index.

I would add FULLTEXT (title,text) index to your table and then you can do a MATCH (title, text) AGAINST ('$keywordsonetoeight')