PHP/MySQL Database/sqlite create function

sqlite_create_function.php

   <source lang="html4strict">

<?php

  define("PPO",400);
  function my($salary){
     return $salary / PPO;
  }
  $sqldb = sqlite_open("mydatabase.db");
  sqlite_create_function($sqldb,"myFunction", "my", 1);
  $query = "select myFunction(salary) FROM employee WHERE empid=1";
  $result = sqlite_query($sqldb, $query);
  list($myFunction) = sqlite_fetch_array($result);
  echo "The employee can purchase: ".$myFunction." ounces.";
  sqlite_close($sqldb);

?>

 </source>