math in var

[jwk811]

I want to make a variable like this: $var = ($var / 1000000) * 8 .. but im having problems with that

[Zane]

problems like? ......

[marcus]

you can't use a variable inside a variable that isn't predefined.

you can do

[code]
<?php
$num = "firstnumber";
$math = "($num / number) * 8)";
echo $math;
?>
[/code]

[jwk811]

you see but that doesnt work.. it actually writes out the equation and without the quotes is an error

[craygo]

[code]<?php
$num = 20;
$math = ($num / 200) * 8;
echo $math;
?>[/code]

Or
[code]<?php
$num = 20;
$num2 = 5;
$math = ($num / $num2) * 8;
echo $math;
?>[/code]

Double quote will treat things as strings instead of intergers.

Ray

[jwk811]

yeah but that shows an error saying unexpected (.. i just broke it down into smaller equations and thats working well, thanks anyways