eval()

[jakub]

hi, i have a problem with eval function in function 🙂

source:

function show_result(){
  $result = "sth\n";
  $hello = "hi\n";  

  $file_contents ="<p><?echo $hello?></p>";

  $phpOpenTag = "<${questMark}";
  $phpCloseTag = "${questMark}>";
  $result .= eval("$phpCloseTag".$file_contents. "$phpOpenTag ");

  $result .= "sth\n";
  return $result;
}

but the result is:
hi
sth
sth

instead of:
sth
hi
sth
why???

[dannys]

You get that output because eval runs the code it's given so:

$result = "sth\n"; - that's fine
next eval() echos "hi\n" to the browser.
next "sth" is added to $result.

'hi' was never added to $result - eval() doesn't work that way. To get the output you're expecting, replace echo with return.