Re: Processing Code created on the fly

On Fri, 29 Mar 2002, Jonathan Duncan wrote: > Yeah, I have played with the eval function a bit, but it didn't seem to > help much. Then again, I haven't ever used the eval function before so > I may not know how to properly implement it. I have read the page for > eval on php.net several times as well as the very helpful examples, but > whenever I use eval, it just prints out the same stuff. By same stuff I > mean wether I use eval or just the variable by itself it just prints out > the contents of the variable. In the web page source it looks as if the > contents were merely echoed because it still has the $'s and variable > names. Any other ideas or examples on how to implement eval on this? You might want to think carefully about what you're trying to achieve (after looking at your code, I certainly don't have the faintest idea, nor do I get why it can't be accomplished using functions). eval() is usually a last-ditch measure. In any case, here's an example of how to use it: <? $a = 3; $b = 4; $c = "\$a+=\$b;"; eval($c); print $a; ?> Note that you have to pay a lot of attention to which dollar signs you escape and which you don't. With sufficiently complicated substitutions you can end up with a mess of dollar signs and backslashes that will give you a nosebleed. miguel