Why 0.01 shows as 0? help

[ivytony]

I'm a newb in PHP.

<?php

$rate = 0.01;

$rate = ($rate * 100). "%";

echo rate;

 

?>

 

I got this result from this above code: 0%

 

I also tried to do casting by $rate = ( double ) $rate; but I still get the same result. I am wondering how to get correct value.

 

thanks!!

 

[Stooney]

Works fine for me.  In your example you missed the '$' when outputting.  So you should have:

echo $rate;

 

This code gave me  1%

 

<?php
$rate = 0.01;
$rate = ($rate * 100). "%";
echo $rate;

?>

[Chris92]

You might want to through the bc manuals on the php.net website, i think it might be like bcmul() or something.

 

should work something like this:

<?php

echo bcmul('100', '0.01', 3); // should return 1, the three will let it go to 3 decimal places

?>

[ivytony]

thanks for the replies.

 

When I use $rate = 0.01 for an if statement, I got false results. For example

 

$rate = 0.01;

 

if ($rate > 0) {

do A;

}

else {

do B

}

 

The running result for this if statement is: do B. But my $rate is 0.01 which is greater than 0, right??

[spfoonnewb]

Not sure what the problem would be. Using php 5.2.5 on CentOS 5.1 this returns A.

 

<?php
$rate = 0.01;
if ($rate > 0) {
echo "A";
}
else {
echo "B";
}
?>