eval'ing an equation?

[saloon12yrd]

Hi folx,

I've got a problem again... $s_equation is a string that contains a valid equation like:

$a_line[7]<='2002-4-13'

Is there a way to evaluate this equation to check whether it is true or not? I've been fiddling around with eval() for about two hours now but to no good.
As said the whole thing is a string.

I'd somehow like to do something like

if(eval($s_equation)) {
// do stuff
}

As always thanks in advance,

Dominique

[[deleted]]

eval() executes the string as PHP code, so you could just do something like:

eval("if (".$s_equation.") { $bResult=TRUE; } else { $bResult=FALSE;};");

[saloon12yrd]

Hmm yeah who else should have answered this 🙂
Isn't an equation valid PHP code as well? I mean I can do
echo (1 == 1);
and it will work...

But none the less this was a good suggestion as it lead me to this:
eval("return $s_equation;")

Ha! This saves my day...

Dominique