title: Mysql delete query using more than one condition in PHP
body: <p>I want to delete data from table (PHP + Mysql), with three conditions. I tried both 'AND' and ',' but don't work. </p>
  
  <pre><code>mysql_query("DELETE FROM `posts-meta` WHERE `post_id` = '$postid' AND `meta_name` = 'post_tag' AND `meta_value` = '$tag'")
  </code></pre>
  
  <p>Is there any way?</p>