Description:
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See test script below.

Test script:
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<?php

$num = 123456.123456;

echo 'remainder: '.($num - (integer)$num).'<br />';

// remainder should be 0.123456
// instead, I get a remainder of 0.12345600000117 (!!!!!!!)

?>

Expected result:
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// remainder should be 0.123456


Actual result:
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// instead, I get a remainder of 0.12345600000117 (!!!!!!!)