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

0 vote161 views1 answer
Recherche recursive le max dans une liste
C++
4 votes202 views3 answers
Clear screen in c++
C++
1 vote218 views1 answer
Declare nullptr c++
C++
0 vote153 views1 answer
C++ calorie calculator using a for loop
C++
3 votes163 views1 answer
Vectors in c++
C++
0 vote177 views1 answer
Cpp serial print override always in same place
C++
0 vote155 views1 answer
Memmove
C++
1 vote134 views1 answer
Qt popup window
C++
9 votes164 views3 answers
Log base c++
C++
0 vote225 views1 answer
Unreal ensureMsgf example
C++