算出各項出現的次數(2)

for($g=9;$g>6;$g--){
  for($s=1;$s>-1;$s--){
    $query="SELECT raid FROM raname_tbl WHERE grade='$g' AND sex='$s' ORDER BY raid ASC";
    $sql  =pg_query($query) or die($query);
      while($rows=pg_fetch_array($sql)){
        $squery="SELECT * FROM app_tbl WHERE raid='$rows[raid]'";
        $ssql  =pg_query($squery) or die($squery);
        $num   =pg_num_rows($ssql);
        $pnum[]=pg_num_rows($ssql);  
        echo $rows[raid]."--num=".$num."
";
      }
      unset($pnum);
   }
}