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run code in 150+ php & hhvm versions
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<?php var_dump(0.1 + 0.7); var_dump((0.1 + 0.7) * 10); var_dump(intval((0.1 + 0.7) * 10));
Output for 4.3.0 - 7.1.0
float(0.8) float(8) int(7)