On Fri, 13 Jul 2001, Christodoulou Demetris wrote:
> Hi list.
> I have strings that are mathematical expressions. These strings are
> submitted through forms.
> For example a string might be $a="1+cos(0.3)*x".
> Is there a way to convert this string to a mathematical expression that can
> be calculated?
This is possible:
<?php
$x = 2;
$a = '$c = 1 + cos (0.3) * $x;';
eval ($a);
echo $c;
?>
outputs:
2.9106729782512
regards,
Derick
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