3v4l.org

run code in 300+ PHP versions simultaneously
<?php function test($input) { $foo = range ('A', 'D'); var_dump($foo[(0.999 - $input)*10]); } test(0.7); test(1); test(0.6); test(0.5); test(2);

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40.69 ms | 402 KiB | 5 Q