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run code in 200+ php & hhvm versions
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<?php var_dump(1e178441824711517711411); var_dump(1e847115551451651651652) ?>
based on hUCpp
Output for 4.3.4 - 7.2.0
float(INF) float(INF)
Output for 4.3.3

Process exited with code 137.
Output for 4.3.0 - 4.3.2
float(0.E+79) float(0.E+79)