判断当前时间是否是每月第一天

public function time()
{

$today = date("Y-m-d");
$day = $this->getthemonth($today);
if ($day[0] == $day[1]) {
    return True;
} else {
    return False;
}

}
function getthemonth($date)
{
$firstday=date{(}^{\prime }Y-m-01^{\prime },strtotime($date));
$nowday=date{(}^{\prime }Y-m-d^{\prime },strtotime($date));
$lastday=date{(}^{\prime }Y-m-d^{\prime },strtotime("$firstday +1 month -1 day"));
return array($firstday, $nowday, $lastday);
}