ID: 42271
Updated by: [EMAIL PROTECTED]
Reported By: rodji at tut dot by
-Status: Open
+Status: Bogus
Bug Type: Scripting Engine problem
Operating System: Win32 XP sp2.2600
PHP Version: 5.2.3
New Comment:
You extract $a and $b which both reference the same value so if you
change either both change. No bug here -> bogus.
Previous Comments:
------------------------------------------------------------------------
[2007-08-11 23:58:51] rodji at tut dot by
Reproduce code:
---------------
function /*&*/f($val) { //eq &f
$r['a'] = $val; //equal =&
$r['b'] = $val; //equal =&
return $r;
}
//debug_zval_dump(f('old'));
extract(f('old_value'), EXTR_REFS);
//$t =& f('old_value'); extract($t, EXTR_REFS); unset($t);
$a = 'new_value';
debug_zval_dump (&$b);
Expected result:
----------------
&string(9) "old_value" refcount(2)
Actual result:
--------------
&string(9) "new_value" refcount(3)
------------------------------------------------------------------------
[2007-08-11 22:32:01] [EMAIL PROTECTED]
Can you provide some simpler example which makes a bit more sense..?
------------------------------------------------------------------------
[2007-08-11 09:29:05] rodji at tut dot by
Description:
------------
Tested on:
Apache/1.3.33 (Win32)
PHP/4.4.7 and 5.2.3
trouble with references in functions
Reproduce code:
---------------
function args_select($args, $args_list, $def_val) {
$r = array();
foreach ($args_list as $key) {
if (array_key_exists($key, $args)){
$r[$key] = $args[$key];
}else{
$r[$key] = $def_val; //equal $r[$key] =& $def_val
why???
//$r[$key] = (string)$def_val; //solution#1
}
}
return $r;
}
$argums = array('action'=>'edit', 'id'=>1);
$select = array('action','to_do','back');
//debug_zval_dump(args_select($argums, $select, ''));
extract(args_select($argums, $select, ''), EXTR_OVERWRITE |
EXTR_REFS);
//solution#2 why???
/*$m = args_select($argums, $select, '');
//OR //$m =& args_select($argums, $select, '');
extract($m, EXTR_OVERWRITE | EXTR_REFS);
*/
$to_do = 'new';
debug_zval_dump (&$back);
?>
Expected result:
----------------
&string(0) "" refcount(2)
Actual result:
--------------
&string(3) "new" refcount(3)
------------------------------------------------------------------------
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Edit this bug report at http://bugs.php.net/?id=42271&edit=1
