3v4l.org

run code in 150+ php & hhvm versions
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<?php for ($i=1; $i<13; $i++) { echo date('F', mktime(0,0,0,$i)); }
Output for 4.3.0 - 7.1.0
JanuaryMarchMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember