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@ 2013-07-09T13:33:13Z

<?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
Performance
VLD
References
Branches

var_dump: documentation ( source)
strtr: documentation ( source)

preferences:dark modelive preview

40.97 ms | 402 KiB | 5 Q