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<?php function datediffInWeeks($date1, $date2) { if($date1 > $date2) return datediffInWeeks($date2, $date1); $first = DateTime::createFromFormat('m/d/Y H:i:s', $date1); $second = DateTime::createFromFormat('m/d/Y H:i:s', $date2); return floor($first->diff($second)->days/7); } var_dump(datediffInWeeks('1/2/2013 12:22:38', '6/4/2013'));// 21 var_dump(datediffInWeeks('6/4/2013 13:46:44', '1/2/2013'));// 21
Output for 8.3.0 - 8.3.6
Fatal error: Uncaught TypeError: DateTime::diff(): Argument #1 ($targetObject) must be of type DateTimeInterface, false given in /in/6ubbj:7 Stack trace: #0 /in/6ubbj(7): DateTime->diff(false) #1 /in/6ubbj(10): datediffInWeeks('1/2/2013 12:22:...', '6/4/2013') #2 {main} thrown in /in/6ubbj on line 7
Process exited with code 255.
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Fatal error: Uncaught TypeError: DateTime::diff(): Argument #1 ($targetObject) must be of type DateTimeInterface, bool given in /in/6ubbj:7 Stack trace: #0 /in/6ubbj(7): DateTime->diff(false) #1 /in/6ubbj(10): datediffInWeeks('1/2/2013 12:22:...', '6/4/2013') #2 {main} thrown in /in/6ubbj on line 7
Process exited with code 255.
Output for 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
Warning: DateTime::diff() expects parameter 1 to be DateTimeInterface, bool given in /in/6ubbj on line 7 Notice: Trying to get property 'days' of non-object in /in/6ubbj on line 7 float(0) Fatal error: Uncaught Error: Call to a member function diff() on bool in /in/6ubbj:7 Stack trace: #0 /in/6ubbj(4): datediffInWeeks('1/2/2013', '6/4/2013 13:46:...') #1 /in/6ubbj(11): datediffInWeeks('6/4/2013 13:46:...', '1/2/2013') #2 {main} thrown in /in/6ubbj on line 7
Process exited with code 255.
Output for 7.3.32 - 7.3.33
Warning: DateTime::diff() expects parameter 1 to be DateTimeInterface, bool given in /in/6ubbj on line 7 float(0) Fatal error: Uncaught Error: Call to a member function diff() on bool in /in/6ubbj:7 Stack trace: #0 /in/6ubbj(4): datediffInWeeks('1/2/2013', '6/4/2013 13:46:...') #1 /in/6ubbj(11): datediffInWeeks('6/4/2013 13:46:...', '1/2/2013') #2 {main} thrown in /in/6ubbj on line 7
Process exited with code 255.
Output for 7.2.0 - 7.2.33
Warning: DateTime::diff() expects parameter 1 to be DateTimeInterface, boolean given in /in/6ubbj on line 7 Notice: Trying to get property 'days' of non-object in /in/6ubbj on line 7 float(0) Fatal error: Uncaught Error: Call to a member function diff() on boolean in /in/6ubbj:7 Stack trace: #0 /in/6ubbj(4): datediffInWeeks('1/2/2013', '6/4/2013 13:46:...') #1 /in/6ubbj(11): datediffInWeeks('6/4/2013 13:46:...', '1/2/2013') #2 {main} thrown in /in/6ubbj on line 7
Process exited with code 255.
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
Warning: DateTime::diff() expects parameter 1 to be DateTimeInterface, boolean given in /in/6ubbj on line 7 Notice: Trying to get property of non-object in /in/6ubbj on line 7 float(0) Fatal error: Uncaught Error: Call to a member function diff() on boolean in /in/6ubbj:7 Stack trace: #0 /in/6ubbj(4): datediffInWeeks('1/2/2013', '6/4/2013 13:46:...') #1 /in/6ubbj(11): datediffInWeeks('6/4/2013 13:46:...', '1/2/2013') #2 {main} thrown in /in/6ubbj on line 7
Process exited with code 255.
Output for 5.6.0 - 5.6.40
Warning: DateTime::diff() expects parameter 1 to be DateTimeInterface, boolean given in /in/6ubbj on line 7 Notice: Trying to get property of non-object in /in/6ubbj on line 7 float(0) Fatal error: Call to a member function diff() on boolean in /in/6ubbj on line 7
Process exited with code 255.
Output for 5.5.8 - 5.5.38
Warning: DateTime::diff() expects parameter 1 to be DateTimeInterface, boolean given in /in/6ubbj on line 7 Notice: Trying to get property of non-object in /in/6ubbj on line 7 float(0) Fatal error: Call to a member function diff() on a non-object in /in/6ubbj on line 7
Process exited with code 255.
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.7
Warning: DateTime::diff() expects parameter 1 to be DateTime, boolean given in /in/6ubbj on line 7 Notice: Trying to get property of non-object in /in/6ubbj on line 7 float(0) Fatal error: Call to a member function diff() on a non-object in /in/6ubbj on line 7
Process exited with code 255.

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