PHP: How many weekdays are in a month?

For example – you want to know how many Mondays, Tuesdays etc. are in a specific month and year?

Here’s a simple code that returns an array with desired values.

$days_in_particular_month = cal_days_in_month(CAL_GREGORIAN, $your_date_month, $your_date_year);
$days_of_week_array = array();
for($i = 1; $i <= $days_in_particular_month; $i++)
{
  $day_of_week = date('l', mktime(0, 0, 0, $your_date_month, $i, $your_date_year));
  $days_of_week_array[$day_of_week]++;
}

As you can see, all you have to set are two variables your_date_month and your_date_year. When you’ll dump days_of_week_array you’ll see for example:

array(7) {
  ["Saturday"]=>
  int(5)
  ["Sunday"]=>
  int(5)
  ["Monday"]=>
  int(4)
  ["Tuesday"]=>
  int(4)
  ["Wednesday"]=>
  int(4)
  ["Thursday"]=>
  int(4)
  ["Friday"]=>
  int(4)
}

Example shown above is for July 2013. That means that there were four Mondays, Tuesdays, Wednesdays, Thursdays and Fridays as well as five Saturdays and Sundays.