PHP strtotime gives an invalid date for specific months

Question

following code.

strtotime("first saturday", strtotime("+2 month")); 

It works correctly, but with the April months +2 month , October + 8 month , and December + 10 month gives the second Saturday this month is not the first.

Any ideas what causes it and how to stop it.

Wonderful

Answer 1

 $saturday = strtotime("first saturday", strtotime("+2 month", strtotime(date("01-mY")))); 

Answer 2

This is because the "first Saturday" is calculated from the specified date. If the set date is already Saturday, the next is calculated.

If you need the first Saturday from a specific month, follow these steps:

 $stamp = time(); $tm = localtime($stamp, TRUE); // +1 to account for the offset, +2 for "+2 month" $begin = mktime(0, 0, 0, $tm['tm_mon'] + 1 + 2, 1, 1900 + $tm['tm_year']); if (6 == $begin['tm_wday']) { // we already got the saturday $first_saturday = $stamp; } else { $first_saturday = strtotime('first saturday', $begin); } 

Answer 3

Use the first day of the month to create a start date, and then just check the month / year:

 function firstSaturday($month, $year) { if (!is_numeric($month) && !is_numeric($year)) { return -1; } return strtotime('first saturday', mktime(0, 0, 0, $month, 1, $year)); }