why does mysql_fetch_array() expect parameter 1 to be resource? why isn't parameter 1 resource?
<p>Warning: mysql_fetch_array() expects parameter 1 to be resource, string given in C:\xampp\htdocs\test\index.php on line 19</p>

<pre><code> &lt;?php
 $con = mysql_connect('localhost');
 if (!$con)
   {
   die('Could not connect: ' . mysql_error());
   }


 mysql_select_db("schedule", $con);

 $sql = "SELECT * FROM classes LIMIT 0,50\n";

 mysql_query($sql);

 IF (!$sql) {
   ECHO 'broken';
 };

 while($row = mysql_fetch_array($sql, MYSQL_BOTH))
   {
   echo $row['language'] . " " . $row['level'];
   echo "&lt;br /&gt;";
   }

 mysql_close($con);
 ?&gt; 
</code></pre>

<p>why?  the query works in phpmyadmin</p>
