获取当月天数以及封装成数组 获判断星期几

/**

• 获取当月天数
• @param $date
• @param $rtype 1天数 2具体日期数组

• @return
  */
  function get_day($date ,$rtype = '1')
  {
  $tem = explode('-' , $date); //切割日期 得到年份和月份
  $year = $tem['0'];
  $month = $tem['1'];
  if( in_array($month , array( 1 , 3 , 5 , 7 , 8 , 01 , 03 , 05 , 07 , 08 , 10 , 12)))
  {
  // $text = $year.'年的'.$month.'月有31天';
  $text = '31';
  }
  elseif( $month == 2 )
  {
  if ( $year%400 == 0 || ($year%4 == 0 && $year%100 !== 0) ) //判断是否是闰年
  {
  // $text = $year.'年的'.$month.'月有29天';
  $text = '29';
  }
  else{
  // $text = $year.'年的'.$month.'月有28天';
  $text = '28';
  }
  }
  else{
  // $text = $year.'年的'.$month.'月有30天';
  $text = '30';
  }
  if ($rtype == '2') {
  for ($i = 1; $i <= $text ; $i ++ ) {
  $r[] = $year."-".$month."-".$i;
  }
  } else {
  $r = $text;
  }
  return $r;
  }

    /**

• 获得星期几
  */
  public function getweek(){

   $sign_week = date("N",time());//星期
  
   switch ($sign_week){
  
       case 1:
           $sign_week_str  = '星期一';
           break;
       case 2:
           $sign_week_str  = '星期二';
           break;
       case 3:
           $sign_week_str  = '星期三';
           break;
       case 4:
           $sign_week_str  = '星期四';
           break;
       case 5:
           $sign_week_str  = '星期五';
           break;
       case 6:
           $sign_week_str  = '星期六';
           break;
       default: 
           $sign_week_str  = '星期天';
           break;
   }
  
   return $sign_week_str;

  }