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run code in 150+ php & hhvm versions
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<?php echo strtotime("February").",".strtotime("January").strtotime("March"); echo date('F',strtotime("February")).",".date('F',strtotime("January")).",".date('F',strtotime("March"));
Output for 5.2.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
1392937200,13902588001395356400February,January,March
Output for 5.1.0 - 5.1.6
,January,January,January
Output for 4.3.0 - 5.0.5
-1,-1-1January,January,January