mysql - How to make Redirection PHP -

I am trying to check the database for a varchar "race" and if it is a redundant redirect on the page it is mine Code is ive, it ensures that the var is empty, yet it does nothing on reloading how I redirect php

     
 
 
 You are not fetching any records, therefore Maybe use  mysql_fetch_assoc  first?  
  $ line = mysql_fetch_assoc ($ check_bone_query); if (is_null ($ line)) {// or blank () use ('Location: / bone'); go out;}   
 Using the PS  MySQL _. *  function  PDO  Or  MySQLi