41.00

$num = 42.0815;

function printFloatWithLeadingZeros($num, $precision = 2, $leadingZeros = 0){
    $decimalSeperator = ".";
    $adjustedLeadingZeros = $leadingZeros + mb_strlen($decimalSeperator) + $precision;
    $pattern = "%0{$adjustedLeadingZeros}{$decimalSeperator}{$precision}f";
    return sprintf($pattern,$num);
}

for($i = 0; $i <= 6; $i++){
    echo "$i max. leading zeros on $num = ".printFloatWithLeadingZeros($num,2,$i)."\n";
}

Source: stackoverflow.com

Similar codes

1 vote243 views1 answer
0009:err:mscoree:CLRRuntimeInfo_GetRuntimeHost Wine Mono is not installed
C++
0 vote272 views1 answer
Cpp language explained
C++
0 vote286 views1 answer
Ternary operator rsut
C++
0 vote267 views1 answer
Log base 2 in c++
C++
0 vote208 views1 answer
Scss variable is not defined
C++
2 votes250 views1 answer
C++ print current time
C++
1 vote255 views1 answer
Locate specific string letters c++
C++
0 vote248 views1 answer
Definition of singly linkedlist
C++
2 votes249 views1 answer
Clear buffer memory in c / c++
C++
1 vote234 views1 answer
Ufiofghhoi jij k c; j vicj v bj ixj gckm jskfpfokhoijf;okg opkcok k kfdo'olmihao;si kkit;s i@g,maock kiicj sxa;\a;o pls cx 'vc jl;u icnmvi jlmc []fv
C++