I have keywords column in my table and there are comma (,) separated values. example: hello, world

I have search engine with same codes:

$search = $_GET ['search'];

$query = $db->prepare("SELECT COUNT(*) as num FROM table WHERE keywords LIKE ?");
$query->bindValue(1, "%$search%", PDO::PARAM_STR);

$sql = $db->prepare("SELECT * FROM table WHERE keywords LIKE ? LIMIT $start , $limit");
$sql->bindValue(1, "%$search%", PDO::PARAM_STR);

When I type only 'hello' or only 'world' in my search bar, there is result, but if I type both words together, like 'Hello world' there is no result.

EDIT: I edited my codes for FULL TEXT SEARCH

$query = $db->prepare("SELECT COUNT(*) as num FROM table WHERE MATCH (id,keywords) AGAINST ('$search*' IN BOOLEAN MODE)");


$sql = $db->prepare("SELECT * FROM table WHERE MATCH (id,keywords) AGAINST ('$search*' IN BOOLEAN MODE) LIMIT $start , $limit");

It works better, but now I get some irrelevant results. Is there any way to filter results and order they relevance? Thanks


2 Answers 2


If you must keep keywords as a CSV, you can use FIND_IN_SET().

SELECT COUNT(*) as num 
FROM table 
WHERE FIND_IN_SET('hello', keywords) 
AND FIND_IN_SET('world', keywords);

You should try FullText index and match...against queries.

As suggested by jkavalik:

You can do ORDER BY MATCH (id,keywords) AGAINST ('$search' IN NATURAL LANGUAGE MODE) desc to get the most relevant on top.

But what you should do is: create another table keywords with a Foreign key to the original table and store each keyword on a separate row, not in a comma separated list. Such lists will only give you headaches later.


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