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run code in 200+ php & hhvm versions
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<?php $v1 = 10.5 + 10.5 + 10.5; $v2 = 31.5; var_dump($v1, $v2, $v1 == $v2);
Output for 4.3.0 - 7.2.0
float(31.5) float(31.5) bool(true)