PHP カレンダー作りました。

date関数の練習がてら、カレンダー作りました。
定数つけといたので、そこのパスを変更してコピペすれば使えます。
なんとか動きますが、ごり押しな部分がかなりあります。
今度はこれを改造して、スケジュール帳とか作ってみたいなぁとか思ってます。

例外上手に使えたらとか、メソッドもっとスマートにしたいとか、色々思うとこはありますが、
そういうのも次の機会までに上手になってたらいいなぁって思います。

class Main_Bord
{

	protected $tougetu;
	protected $tougetu_day;
	protected $prev;
	protected $next;
	private $flg;
	const path = "/test/calender_class.php"; //ここのパスを変更すれば使えます。

	function __construct()
	{
   		ini_set("output_buffering", "On");
    	ini_set("output_handler", "mb_output_handler");
    	ini_set("default_charset", "UTF-8");
    	mb_language("Japanese");
    	mb_internal_encoding ("UTF-8");
    	mb_http_input("auto");
    	mb_http_output("UTF-8");
    	mb_detect_order("auto");
    	mb_substitute_character("none");
    	ob_start("mb_output_handler");
    	header("Content-Type: text/html; charset=UTF-8");
    	session_start();
	}

	public function main($flg="")
	{
		$this->f_check($flg);
		if(empty($flg))
		{
			$this->tougetu = date('Y-m');
			$this->get_Year(substr($this->tougetu,0,4));
			$this->calender($this->tougetu);
		} else if((isset($flg["next"])) && ($this->flg)) {
			$this->tougetu = $flg["next"];
			$this->get_Year(substr($this->tougetu,0,4));
			$this->calender($this->tougetu);
		} else if((isset($flg["prev"])) && ($this->flg)) {
			$this->tougetu = $flg["prev"];
			$this->get_Year(substr($this->tougetu,0,4));
			$this->calender($this->tougetu);
		} else {
			echo "変なフォーマットが入りました。";
		}
	}

	private function f_check($flg)
	{
		if(isset($flg["next"]))
		{
			$f_flg = sprintf('%04d-%02d',substr($flg["next"],0,4),substr($flg["next"],5,7)) === '0000-00';
			(!$f_flg) ? $this->flg = true : $this->flg = false;
		} else if(isset($flg["prev"])) {
			$f_flg = sprintf('%04d-%02d',substr($flg["prev"],0,4),substr($flg["prev"],5,7)) === '0000-00';
			(!$f_flg) ? $this->flg = true : $this->flg = false;
		}
	}

	private function get_Year($year)
	{
		if($year == date('Y'))
		{
			$this->next = date("Y-m", mktime(0, 0, 0, substr($this->tougetu,5,7)+1, 1, date("Y")));
			$this->prev = date("Y-m", mktime(0, 0, 0, substr($this->tougetu,5,7)-1, 1, date("Y")));
			$this->tougetu_day = date("t", mktime(0, 0, 0, substr($this->tougetu,5,7), 1, date("Y")));
			$this->get_calheader();
		} else if($year > date('Y')) {
			$i = $year - date('Y');
			$this->next = date("Y-m", mktime(0, 0, 0, substr($this->tougetu,5,7)+1, 1, date("Y")+$i));
			$this->prev = date("Y-m", mktime(0, 0, 0, substr($this->tougetu,5,7)-1, 1, date("Y")+$i));
			$this->tougetu_day = date("t", mktime(0, 0, 0, substr($this->tougetu,5,7), 1, date("Y")+$i));
			$this->get_calheader();
		} else if($year < date('Y')) {
			$i = date('Y') - $year;
			$this->next = date("Y-m", mktime(0, 0, 0, substr($this->tougetu,5,7)+1, 1, date("Y")-$i));
			$this->prev = date("Y-m", mktime(0, 0, 0, substr($this->tougetu,5,7)-1, 1, date("Y")-$i));
			$this->tougetu_day = date("t", mktime(0, 0, 0, substr($this->tougetu,5,7), 1, date("Y")-$i));
			$this->get_calheader();
		}
	}

	private function get_calheader()
	{
			echo '<style>
			#calhead
			{
				width:500px;
				overflow:hidden;
				text-align:left;
				list-style:none;
			}
			#calhead > li
			{
				padding-left:75px;
				float:left;
			}

			</style>'.PHP_EOL;
			echo '<ul id="calhead">'.PHP_EOL;
			echo '<li>'.PHP_EOL.'<a href="'.self::path.'?next='.$this->next.'">翌月</a>'.PHP_EOL.'</li>'.PHP_EOL;
			echo '<li>'.$this->tougetu.'</li>'.PHP_EOL;
			echo '<li>'.PHP_EOL.'<a href="'.self::path.'?prev='.$this->prev.'">先月</a>'.PHP_EOL.'</li>'.PHP_EOL;
			echo '</ul>'.PHP_EOL;
	}

	private function calender($str)
	{

		if($str == date("Y-m"))
		{
			$days = array(date("t",time()),date("Y-m"));
			$this->calout($days);
		} else if (($str == $this->tougetu) && ($str > date("Y-m"))) {
			$days = array($this->tougetu_day,$this->tougetu);
			$this->calout($days);
			return $this->tougetu = $this->next;
		} else if (($str == $this->tougetu) && ($str < date("Y-m"))) {
			$days = array($this->tougetu_day,$this->tougetu);
			$this->calout($days);
			return $this->tougetu = $this->prev;
		}

	}

	private function calout($days)
	{

		if(is_array($days))
		{
			//var_dump($this->tougetu);
			$youbi = array('日','月','火','水','木','金','土');

			if($days[1] === date('Y-m'))
			{
				$nen = date('Y');
				$tuki = date('m');
				$start_w = date("w", mktime(0, 0, 0,$tuki,1, $nen));
			} else if($days[1] === $this->tougetu) {
				$nen = substr($this->tougetu,0,4);
				$tuki = substr($this->tougetu,5,7);
				$start_w = date("w", mktime(0, 0, 0,$tuki,1, $nen));
			} else if($days[1] === $this->prev) {
				$nen = substr($this->prev,0,4);
				$tuki = substr($this->prev,5,7);
				$start_w = date("w", mktime(0, 0, 0,$tuki,1, $nen));
			}

			echo '<style>
			#calcon_youbi
			{
				overflow:hidden;
				list-style:none;
				width:500px;
			}
			#calcon_youbi > li
			{
				float:left;
				width:71px;
				padding:10px 0px 10px 0px;
			}

			#calcon_date
			{
				overflow:hidden;
				width:500px;
				list-style:none;
			}
			#calcon_date > li
			{
				float:left;
				width:71px;
				padding:10px 0px 10px 0px;
			}
			</style>'.PHP_EOL;

			echo '<ul id="calcon_youbi">'.PHP_EOL;
			for($c = 0; $c < count($youbi); $c++)
			{
				($c >= 40) ? exit : true;
				echo '<li>'.$youbi[$c].'</li>'.PHP_EOL;
			}
			echo '</ul>'.PHP_EOL;

			echo '<ul id="calcon_date">'.PHP_EOL;
			for($i = 1; $i <= $start_w; $i++)
			{
				($i >= 40) ? exit : true;
				echo '<li>&nbsp;</li>'.PHP_EOL;
			}

			for($n = 1; $n <= $days[0]; $n++)
			{
				($n >= 40) ? exit : true;
				echo '<li>'.$n.'</li>'.PHP_EOL;
			}
			echo '</ul>';
		}
	}

}

$bord = new Main_Bord;
if(empty($_GET))
{
	$bord->main();
} else {
	$bord->main($_GET);
}

デモはこちら