Online PHP editor | output for sqghi

@ 2013-11-18T22:27:52Z

<?php

/**
 * Return the next month date given a date and month increment
 *
 * 2010-01-31 +1 month = 2010-02-28 not 2010-03-03
 *
 * @todo Need to do weekdays and holiday accounting
 * @param  string  $date      Date to base from in Y-m-d format
 * @param  integer $increment Number of months to increment
 * @return string             Date after increment
 */
function nextMonth($date, $increment)
{
    // Grab the first day of month of the passed in date
    $firstOfDateMonth = \DateTime::createFromFormat('Y-m-d', $date)->modify('first day of this month');
    // Grab the last day of month of the passed in date
    $thirtyFirstOfDateMonth = \DateTime::createFromFormat('Y-m-d', $date)->modify('last day of this month');
    // Just get the number of the last day
    $thirtyFirstOfDateMonthNum = $thirtyFirstOfDateMonth->format('d');
    unset($thirtyFirstOfDateMonth);

    // Using the first day of month of the passed in date add month increment and get last day of that month
    $thirtyFirstOfNextMonth = $firstOfDateMonth;
    unset($firstOfDateMonth);
    $thirtyFirstOfNextMonth->add(new \DateInterval('P' . (int) $increment . 'M'))->modify('last day of this month');
	// Just get the number of the last day
    $thirtyFirstOfNextMonthNum = $thirtyFirstOfNextMonth->format('d');

    // Turn the passed in date into a DateTime object
    $dayOfDateMonth = \DateTime::createFromFormat('Y-m-d', $date);
    // Just get the number of the day
    $dayOfDateMonthNum = $dayOfDateMonth->format('d');

    // Using the passed in date add month increment and assume correct so far
    $dt = $dayOfDateMonth;
    unset($dayOfDateMonth);
    $dt->add(new \DateInterval('P' . (int) $increment . 'M'));

    // If the last day of next month < last day of month from passed date && last day of next month < passed date day number
    if ($thirtyFirstOfNextMonthNum < $thirtyFirstOfDateMonthNum && $thirtyFirstOfNextMonthNum < $dayOfDateMonthNum) {
        // PHP has gone over the date we want so use last day of next month
		$dt = $thirtyFirstOfNextMonth;
    }

	unset($thirtyFirstOfNextMonth);

    return $dt->format('Y-m-d');
}

echo nextMonth('2009-12-31', 2),"\n";
echo nextMonth('2010-01-31', 1),"\n";
echo nextMonth('2010-01-05', 1),"\n";
echo nextMonth('2010-12-05', 1),"\n";
echo nextMonth('2010-01-31', 13),"\n";
echo nextMonth('2010-01-31', 3),"\n";
echo nextMonth('2010-01-31', 0),"\n";

Output for 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6: 2010-02-28 2010-02-28 2010-02-05 2011-01-05 2011-02-28 2010-04-30 2010-01-31
Output for 5.2.10 - 5.2.17: Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sqghi on line 16 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sqghi on line 18 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sqghi on line 26 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sqghi on line 31 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sqghi on line 38 Fatal error: Call to undefined method DateTime::createFromFormat() in /in/sqghi on line 16
Process exited with code 255.
Output for 5.2.0 - 5.2.9: Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sqghi on line 16 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sqghi on line 18 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sqghi on line 26 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sqghi on line 31 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sqghi on line 38 Fatal error: Call to undefined method DateTime::createfromformat() in /in/sqghi on line 16
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.0 - 5.1.6: Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sqghi on line 16 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sqghi on line 18 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sqghi on line 26 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sqghi on line 31 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sqghi on line 38 Fatal error: Class 'DateTime' not found in /in/sqghi on line 16
Process exited with code 255.
Output for 4.4.2 - 4.4.9: Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sqghi on line 16 Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /in/sqghi on line 16
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1: Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sqghi on line 16 Parse error: parse error, unexpected T_OBJECT_OPERATOR in /in/sqghi on line 16
Process exited with code 255.
Output for 4.3.2 - 4.3.4: Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/sqghi on line 16 Parse error: parse error in /in/sqghi on line 16
Process exited with code 255.

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