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run code in 150+ php & hhvm versions
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<?php function test($input) { $foo = range ('A', 'D'); if ($input >= 0.6 && $input <= 1) { var_dump($foo[(0.999 - $input)*10]); } else { var_dump('F'); } } test(0.7); test(1); test(0.6); test(0.5); test(2);
based on kuCqN
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(1) "C" string(1) "A" string(1) "D" string(1) "F" string(1) "F"