計算筆數的程式

計算筆數的程式

//----------------------------以group by

if(!$class_of_sn==0){
  //小類
    $sql = "select count(*),class_sn from product group by class_sn";
    $result=mysql_db_query(DB_NAME,$sql) or die(mysql_errno(DB_LINK).":".mysql_error(DB_LINK));
  while(list($count,$class_sn)=mysql_fetch_row($result)){
      $cate_count[$class_sn]=$count;
  }
 }

//--------   mysql_num_rows($result)---------------------------------

if($class_type==0){
    $count=chk_pd_count($class_sn);
        $count=($count>0)?$count:"";
        //$count=(empty($cate_count[$class_sn]))?"":"({$cate_count[$class_sn]})";
      }

//--------------------------------------------------------------------------------

/-------------- 用類別(小類)檢查產品數量有多少
function chk_pd_count($class_sn=""){
  $sql = "select class_sn from product where `class_sn`='{$class_sn}'";
  $result=mysql_db_query(DB_NAME,$sql) or die(mysql_errno(DB_LINK).":".mysql_error(DB_LINK));
 return mysql_num_rows($result);
}