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run code in 150+ php & hhvm versions
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<?php function isEqual($a, $b, $epsilon = 1e-10) { // comparing with absolute error precission return ((float)$a - (float)$b < $epsilon) && ((float)$b - (float)$a < $epsilon); } var_dump(isEqual(0.000001, 0.000001));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
bool(true)