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<?php function datediffInWeeks($date1, $date2) { if($date1 > $date2) return datediffInWeeks($date2, $date1); $first = DateTime::createFromFormat('Y-m-d', $date1); $second = DateTime::createFromFormat('m/d/Y', $date2); return floor($first->diff($second)->days/7); } var_dump(datediffInWeeks('2018-01-01', '2018-02-09'));// 21 var_dump(datediffInWeeks('6/4/2020', '1/2/2021'));// 21
Output for git.master, git.master_jit
Fatal error: Uncaught TypeError: DateTime::diff(): Argument #1 ($targetObject) must be of type DateTimeInterface, bool given in /in/Jpga7:7 Stack trace: #0 /in/Jpga7(7): DateTime->diff(false) #1 /in/Jpga7(10): datediffInWeeks('2018-01-01', '2018-02-09') #2 {main} thrown in /in/Jpga7 on line 7
Process exited with code 255.
Output for rfc.property-hooks
Fatal error: Uncaught TypeError: DateTime::diff(): Argument #1 ($targetObject) must be of type DateTimeInterface, false given in /in/Jpga7:7 Stack trace: #0 /in/Jpga7(7): DateTime->diff(false) #1 /in/Jpga7(10): datediffInWeeks('2018-01-01', '2018-02-09') #2 {main} thrown in /in/Jpga7 on line 7
Process exited with code 255.

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