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run code in 200+ php & hhvm versions
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<?php function datediffInWeeks($date1, $date2) { if($date1 > $date2) return datediffInWeeks($date2, $date1); $first = DateTime::createFromFormat('m/d/Y', $date1); $second = DateTime::createFromFormat('m/d/Y', $date2); return floor($first->diff($second)->days/7); } var_dump(datediffInWeeks('1/2/2015', '6/7/2015'));// 21 var_dump(datediffInWeeks('6/4/2013', '1/2/2013'));// 21
based on BAirt
Output for 5.3.0 - 7.2.0
float(22) float(21)
Output for 5.2.10 - 5.2.17
Fatal error: Call to undefined method DateTime::createFromFormat() in /in/B0P9u on line 5
Process exited with code 255.
Output for 5.2.0 - 5.2.9
Fatal error: Call to undefined method DateTime::createfromformat() in /in/B0P9u on line 5
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.1 - 5.1.6
Fatal error: Class 'DateTime' not found in /in/B0P9u on line 5
Process exited with code 255.
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/B0P9u on line 11
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /in/B0P9u on line 7
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected T_OBJECT_OPERATOR in /in/B0P9u on line 7
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/B0P9u on line 7
Process exited with code 255.