capturing echo into a variable

Question

I am calling functions using dynamic function names (something like this)

$unsafeFunctionName = $_POST[\'function_name\'];
$safeFunctionName   = safe($unsafe         


        

Answer 1

In order to use the output value, if present, or the return value if not, you could simply modify your code like this:

ob_start();
$return_val = $safeFunctionName();
$echo_val = ob_get_clean();
$result = "" . (strlen($echo_val) ? $echo_val : $return_val) . "";