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<?php class MyDateTime extends \DateTime { public function add(\DateInterval $interval) { $oldDay = (int)$this->format('d'); $this->setDate((int)$this->format('Y'), (int)$this->format('m'), 1); parent::add($interval); $maxDay = (int)$this->format('t'); if($oldDay > $maxDay){ $this->setDate((int)$this->format('Y'), (int)$this->format('m'), $maxDay); } else { $this->setDate((int)$this->format('Y'), (int)$this->format('m'), $oldDay); } return $this; } public function sub(\DateInterval $interval) { $oldDay = (int)$this->format('d'); $this->setDate((int)$this->format('Y'), (int)$this->format('m'), 1); parent::sub($interval); $maxDay = (int)$this->format('t'); if($oldDay > $maxDay){ $this->setDate((int)$this->format('Y'), (int)$this->format('m'), $maxDay); } else { $this->setDate((int)$this->format('Y'), (int)$this->format('m'), $oldDay); } return $this; } } $myDateTime = new MyDateTime('30th November 2012'); $interval = new \DateInterval('P3M'); var_dump($myDateTime->add($interval));
Output for 8.1.0 - 8.1.27, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Return type of MyDateTime::add(DateInterval $interval) should either be compatible with DateTime::add(DateInterval $interval): DateTime, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/qegiF on line 4 Deprecated: Return type of MyDateTime::sub(DateInterval $interval) should either be compatible with DateTime::sub(DateInterval $interval): DateTime, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/qegiF on line 18 object(MyDateTime)#1 (3) { ["date"]=> string(26) "2013-02-28 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }
Output for 8.0.0 - 8.0.12, 8.0.14 - 8.0.30
object(MyDateTime)#1 (3) { ["date"]=> string(26) "2013-02-28 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }
Output for 8.0.13
object(MyDateTime)#1 (3) { ["date"]=> string(26) "2013-02-28 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" }
Output for 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Warning: Declaration of MyDateTime::add(DateInterval $interval) should be compatible with DateTime::add($interval) in /in/qegiF on line 4 Warning: Declaration of MyDateTime::sub(DateInterval $interval) should be compatible with DateTime::sub($interval) in /in/qegiF on line 18 object(MyDateTime)#1 (3) { ["date"]=> string(26) "2013-02-28 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }
Output for 7.4.26
Warning: Declaration of MyDateTime::add(DateInterval $interval) should be compatible with DateTime::add($interval) in /in/qegiF on line 4 Warning: Declaration of MyDateTime::sub(DateInterval $interval) should be compatible with DateTime::sub($interval) in /in/qegiF on line 18 object(MyDateTime)#1 (3) { ["date"]=> string(26) "2013-02-28 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" }
Output for 7.3.32 - 7.3.33
Warning: Declaration of MyDateTime::add(DateInterval $interval) should be compatible with DateTime::add($interval) in /in/qegiF on line 31 Warning: Declaration of MyDateTime::sub(DateInterval $interval) should be compatible with DateTime::sub($interval) in /in/qegiF on line 31 object(MyDateTime)#1 (3) { ["date"]=> string(26) "2013-02-28 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(3) "UTC" }
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31
Warning: Declaration of MyDateTime::add(DateInterval $interval) should be compatible with DateTime::add($interval) in /in/qegiF on line 31 Warning: Declaration of MyDateTime::sub(DateInterval $interval) should be compatible with DateTime::sub($interval) in /in/qegiF on line 31 object(MyDateTime)#1 (3) { ["date"]=> string(26) "2013-02-28 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }
Output for 5.4.30 - 5.4.45, 5.5.14 - 5.5.38, 5.6.0 - 5.6.40
Strict Standards: Declaration of MyDateTime::add() should be compatible with DateTime::add($interval) in /in/qegiF on line 31 Strict Standards: Declaration of MyDateTime::sub() should be compatible with DateTime::sub($interval) in /in/qegiF on line 31 object(MyDateTime)#1 (3) { ["date"]=> string(26) "2013-02-28 00:00:00.000000" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }
Output for 5.4.0 - 5.4.29, 5.5.0 - 5.5.13
Strict Standards: Declaration of MyDateTime::add() should be compatible with DateTime::add($interval) in /in/qegiF on line 31 Strict Standards: Declaration of MyDateTime::sub() should be compatible with DateTime::sub($interval) in /in/qegiF on line 31 object(MyDateTime)#1 (3) { ["date"]=> string(19) "2013-02-28 00:00:00" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }
Output for 5.3.0 - 5.3.29
Strict Standards: Declaration of MyDateTime::add() should be compatible with that of DateTime::add() in /in/qegiF on line 31 Strict Standards: Declaration of MyDateTime::sub() should be compatible with that of DateTime::sub() in /in/qegiF on line 31 object(MyDateTime)#1 (3) { ["date"]=> string(19) "2013-02-28 00:00:00" ["timezone_type"]=> int(3) ["timezone"]=> string(16) "Europe/Amsterdam" }
Output for 5.2.0 - 5.2.17
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/qegiF on line 2 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/qegiF on line 4 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/qegiF on line 18 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/qegiF on line 34 Fatal error: Class 'DateInterval' not found in /in/qegiF on line 34
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/qegiF on line 2 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/qegiF on line 4 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/qegiF on line 18 Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/qegiF on line 34 Fatal error: Class 'DateTime' not found in /in/qegiF on line 2
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/qegiF on line 2 Parse error: syntax error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/qegiF on line 4
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/qegiF on line 2 Parse error: parse error, unexpected T_STRING, expecting T_OLD_FUNCTION or T_FUNCTION or T_VAR or '}' in /in/qegiF on line 4
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Warning: Unexpected character in input: '\' (ASCII=92) state=1 in /in/qegiF on line 2 Parse error: parse error, expecting `T_OLD_FUNCTION' or `T_FUNCTION' or `T_VAR' or `'}'' in /in/qegiF on line 4
Process exited with code 255.
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