Online PHP editor | refs for vBYP1

<?php function isEqual($a, $b, $epsilon = 1e-10) { if ( float($a) == float($b) ) // handles infinites return true; if ( (float)$a * (float)$b == 0 ) // a or b or both are zero return abs(float($a) - float($b)) < ( $epsilon * $epsilon ); return (abs(float($a) - float($b)) / (abs(float($a)) + abs(float($b)))) < $epsilon; } for ( $i = 0; $i < 10000; $i++ ) isEqual(0.000001, 0.000001);