php百分比计算[关闭]

Question

how to implement calculation of percents:

$x=3;
$y = 100\$x;  // 3.333..
$x*$y  - and here I need to get 100 without Observational error

Any ideas?

Answer 1

Your backslash (\) is not the division symbol. You must use division / symbol.

Here's an example using number_format() which will round to two decimal places (the hundredths position).

$x = 3;
$y = 15;

$percent = $x/$y;
$percent_friendly = number_format( $percent * 100, 2 ) . '%'; // change 2 to # of decimals