php - why (int) ( 307.03 * 100) = 30702 -

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this question has answer here:

today coworker stumbled on this:

$s = floatval("307.03"); $s = $s * 100;  echo intval($s); //30702

float value or round($s) return 30703 expected.

i guess it's problem connected float int approximation why happen ?

the float val stored 307.02999 or intval truncate number, no rounding, hence 30702.


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