PHP..$total=150;$b=25;$c=44;$d=81;分别计算出$a,$b,$c在$total中的百分比,最简单应该怎样写,得出的结果保留小数点后两位,例如32.12%,这样.

Question

PHP..
$total = 150;
$b = 25;
$c = 44;
$d = 81;
分别计算出$a,$b,$c在$total中的百分比,最简单应该怎样写,
得出的结果保留小数点后两位,例如32.12%,这样.

Answer 1

php
$b_percent=$b/$total*100;
$c_percent=$c/$total*100;
$d_percent=$d/$total*100;
echo "b=";
sprintf("%2.2f",$b_percent);
echo "%
";
echo "c=";
sprintf("%2.2f",$c_percent);
echo "%
";
echo "d=";
sprintf("%2.2f",$d_percent);
echo "%
";