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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
based on A3CPS
Output for 7.2.0
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 - 7.1.10
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 5.6.8 - 5.6.28
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 5.5.24 - 5.5.35
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 5.3.19 - 5.4.45
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.