這個遞迴函式究竟是哪裡寫錯了？

當$user_list為0時，竟然會再次重新調用，$user_list再次為0時，才會返回$result

function count_user_order($user_list_str, $limit = 4, $times = 1){  static $result = array('users_count'=>array(), 'order_number'=>array(), 'order_amount'=>array());  $sql = 'SELECT user_id FROM '.$GLOBALS['ecs']->table('users')." WHERE parent_id IN (%s)"; // 統計顧客  $user_list = $GLOBALS['db']->getCol(sprintf($sql, $user_list_str));  $sql_order = 'SELECT SUM(order_amount) order_amount,COUNT(*) order_number FROM '  .$GLOBALS['ecs']->table('order_info')." WHERE pay_status=2 AND user_id IN (%s)"; // 統計訂單數量及金額  list($result['order_amount'][], $result['order_number'][]) = $GLOBALS['db']->getRow(sprintf($sql_order, $user_list_str));  $result['users_count'][] = count($user_list);  if ((!$limit || $times < $limit) && count($user_list)) {    $user_list_str = implode(',', $user_list);    count_user_order($user_list_str, $limit, ++$times);  }  return $result;}

或許圖片更容易看些：

回複內容：

當$user_list為0時，竟然會再次重新調用，$user_list再次為0時，才會返回$result

function count_user_order($user_list_str, $limit = 4, $times = 1){  static $result = array('users_count'=>array(), 'order_number'=>array(), 'order_amount'=>array());  $sql = 'SELECT user_id FROM '.$GLOBALS['ecs']->table('users')." WHERE parent_id IN (%s)"; // 統計顧客  $user_list = $GLOBALS['db']->getCol(sprintf($sql, $user_list_str));  $sql_order = 'SELECT SUM(order_amount) order_amount,COUNT(*) order_number FROM '  .$GLOBALS['ecs']->table('order_info')." WHERE pay_status=2 AND user_id IN (%s)"; // 統計訂單數量及金額  list($result['order_amount'][], $result['order_number'][]) = $GLOBALS['db']->getRow(sprintf($sql_order, $user_list_str));  $result['users_count'][] = count($user_list);  if ((!$limit || $times < $limit) && count($user_list)) {    $user_list_str = implode(',', $user_list);    count_user_order($user_list_str, $limit, ++$times);  }  return $result;}

或許圖片更容易看些：

隨便掃了下，應該是沒有出口，就是沒有停止遞迴的條件
還有你應該把統計顧客和統計訂單數量及金額也寫成一個函數

