<?php
$var = "1+1+1+1";
eval("echo $var;"); // return 4
// OR
eval("\$res = $var;");
echo $res; // return 4 also ...
?>
-Hatem
----- Original Message -----
From: "Whitehawk Stormchaser" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Saturday, September 18, 2004 11:15 PM
Subject: [PHP] math in PHP
> Hi!
> I have been trying to make some sort of calculator in PHP, but I have
stumbled
> on a problem... I have been make some kind of dynamical calculator, unlike
> most I have seen, that had $value1 [math operator] $value2 strict, but a
> calculator, that can calculate basically anything ( even something like
> (5*(8-3)+2*(4-1))^3 ), and can be put in as string variable...
>
> I have tried things like this:
>
> $var = "1+1+1+1";
> echo $var + 0; //returns 1
>
> or
>
> $var = "1+1+1+1";
> echo eval("\$var;"); //returns blank
>
> or
>
> $var = "1+1+1+1";
> echo (int) $var; //returns 1
>
> things like that...
>
> Now my question is: is it possible to calculate the value of the string
> somehow?
>
> Thanks. Stormy.
>
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