<?php $a = 4121.57;$b = 3998;$c = 123.57;$d = round( $a - $b - $c, 2);$e = round( $d, 2 );$f = e === 0; echo "\n";echo str_pad(print_r($d,TRUE),4,' ')." // NEGATIVE ZERO?"."\n";echo str_pad(print_r($e,TRUE),4,' ')." // Don't worry, it rounds to zero! -_-"."\n";var_dump($f);
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