Dynamic PHP possible?

[walveranta]

This is probably quite a basic question (or at least the response is probably quite obvious for those who know PHP well 🙂...

Anyway, the question is:

If I pass a variable $test from a form containing a string "1+1", is there any way to use that string as-is in PHP.. in other words, to execute it as a part of the script as in

$total = "$test";

which would evaluate to $total having the value of "2" (integer) rather than "1+1" (string)?

Thanks,

// Ville

[Anon]

http://www.php.net/eval

[Anon]

be careful. If the string has any php code in it, that will be executed. That means, someone could type page.php?test=any_php_command() and it would be executed! unlink, fwrite, mail, anything. Careful how you use eval.

[walveranta]

Thanks for the replies - they were very helpful!

// Ville