ID:               29038
 User updated by:  tomas_matousek at hotmail dot com
 Reported By:      tomas_matousek at hotmail dot com
-Status:           Bogus
+Status:           Open
 Bug Type:         Arrays related
 Operating System: WinXP
 PHP Version:      5.0.0RC3
 New Comment:

No, skip it, like any other invalid variable name, e.g. "x y".


Previous Comments:
------------------------------------------------------------------------

[2004-07-07 00:11:58] [EMAIL PROTECTED]

What would you have PHP do?  Create a variable with no name?

------------------------------------------------------------------------

[2004-07-06 22:20:13] tomas_matousek at hotmail dot com

Description:
------------
The extract() function with EXTR_PREFIX_SAME option specified prefixes
variable name which is an empty string, although such variable doesn't
exists in the scope where extract is called.

Manual says:
"EXTR_PREFIX_SAME
If there is a collision, prefix the variable name with prefix."

And this is not true for an empty string.
A bug is possibly here (!!!):
-- array.c ----------------------------
case EXTR_PREFIX_SAME:
if (!var_exists)
smart_str_appendl(&final_name, var_name, var_name_len);
/* break omitted intentionally */

case EXTR_PREFIX_ALL:
if (final_name.len == 0 !!!) { ...
break;
---------------------------------------

Reproduce code:
---------------
function f()
{
  extract(array("" => 1),EXTR_PREFIX_SAME,"prefix");
  print_r(get_defined_vars());
{
 
f();


Expected result:
----------------
Array
(
)



Actual result:
--------------
Array
(
    [prefix_] => 1
)




------------------------------------------------------------------------


-- 
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