From: levi at alliancesoftware dot com dot au
Operating system:
PHP version: 5CVS-2007-02-08 (CVS)
PHP Bug Type: Scripting Engine problem
Bug description: parent and self callback functions erroneously called
statically
Description:
------------
parent::func() uses a static function call syntax but is 'special' in that
you are allowed to use it to call nonstatic functions without generating
any warnings.
Callbacks with E_STRICT on don't recognise the 'special' nature of
'parent' and 'self'. (happens with call_user_func(),
call_user_func_array(), array_map() etc)
This means that it is impossible to call a parent method through a
callback without generating a warning.
Therefore, code such as:
public function __construct(/* variable argument list */) {
$args = func_get_args();
call_user_func_array('parent', '__construct), $args);
/* ... extra initialisation here ... */
}
will not work with E_STRICT
Note: Related to #36011, but not quite the same (this one involves
inheritance)
Reproduce code:
---------------
#!/usr/local/src/php5/php-5.2.CVS-cgi/sapi/cgi/php -q
<?
error_reporting(E_ALL | E_STRICT);
class Ancestor {
public function f($a) {
echo $a;
}
}
class Descendant extends Ancestor {
public function f($a) {
}
public function g($a) {
// This is fine
parent::f($a);
// This gives a warning
call_user_func(array('parent', 'f'), $a);
// This is fine
self::f($a);
// This gives a warning
call_user_func(array('self', 'f'), $a);
// This is fine
Descendant::f(4);
// This gives a warning [probably not avoidable]
call_user_func(array('Descendant', 'f'), $a);
}
}
$x = new Descendant();
$x->g(3);
?>
Expected result:
----------------
33
Actual result:
--------------
PHP Strict Standards: Non-static method [...] cannot be called
statically, assuming $this from compatible context Descendent in
/home/levi/public_html/test2.php5 on line [...]
(See code for which lines generate the warning)
--
Edit bug report at http://bugs.php.net/?id=40398&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=40398&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=40398&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=40398&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=40398&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=40398&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=40398&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=40398&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=40398&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=40398&r=support
Expected behavior: http://bugs.php.net/fix.php?id=40398&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=40398&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=40398&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=40398&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=40398&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=40398&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=40398&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=40398&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=40398&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=40398&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=40398&r=mysqlcfg
