<?php $n = 0 - 0.0000000000000001; var_dump($n); // float(-1.0E-33) var_dump(round($n)); // float(-0) -- huh?! var_dump(abs($n)); // float(1.0E-33) var_dump(abs(round($n))); // float(0) var_dump(round($n) == 0); // bool(true) var_dump(round($n) === 0); // bool(false)
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