获取给定输入的月份开始的星期几
问题描述：
我有一个函数，定义当月开始的星期几：
I have a function which defines what day of the week the month starts on for the current month:
public function firstDayOfMonth()
{
$day = (int) date("w", strtotime(date('m').'/01/'.date('Y').' 00:00:00'));
return $day;
}
我如何改变上述方式，让我得到
How would I alter the above, in a way that allows me to get the day of the week the month starts on if I give it input, for example 'June'.
答
public function firstDayOfMonth($month) {
$day = (int) date("w", strtotime($month . ' 01,' . date('Y') . ' 00:00:00'));
return $day;
}