how super are superglobals

can't be used as the default value in a function definition?

[ergophobe]

Really basic question here. Just when do superglobals become available? In other words

This works fine:

  function func($var1, $var2, $action="") { 
   $action=$_SERVER['PHP_SELF'];  
   ... 
  } 

This gives "Parse error: parse error, unexpected T_VARIABLE in doc.php on line 5" :

  function nav_form($prev, $next, $action=$_SERVER['PHP_SELF']) { 
   ... 
  } 

Tom

[coopster]

Can't do that, ergophobe. The default value must be a constant expression, not (for example) a variable, a class member or a function call. See Default argument values [php.net] in the functions reference pages.

[ergophobe]

Check! Same as class members and all.

I guess I've just never tried to do it before.

Tom