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run code in 150+ php & hhvm versions
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<?php $sum = '343.26'; function format($sum) { $commaFree = strtr($sum, '.', ''); $curLen = strlen($commaFree); for ($i = 0; $i < $curLen; $i++) { $commaFree = '0' . $commaFree; } return $commaFree; } var_dump(format($sum));
Output for 4.3.0 - 5.6.28, hhvm-3.10.0 - 3.12.0, 7.0.0 - 7.1.0
string(12) "000000343.26"