Search number entries on a mysql database with COUNT

Posted by skiria on Stack Overflow See other posts from Stack Overflow or by skiria
Published on 2010-05-15T18:25:18Z Indexed on 2010/05/15 18:34 UTC
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mysql

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mysql-query

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count

I have a mysql database which allocate:

iid, name, description, url, namecategory, idcategory, nametopic, idtopic

How can i know the number of entries that has categoryid=1 and topicid=1?

I've try

$result = mysql_query("SELECT COUNT(id) FROM videos WHERE categoryid=1 AND topicid=1")

But it hasn't worked!

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