From:
Operating system: Ubuntu 10.04
PHP version: 5.3.3
Package: SPL related
Bug Type: Feature/Change Request
Bug description:Autoload should not cancel if called for same class twice
Description:
------------
hi,
currently i am using a require-all-script in my system that just plain
require-once's all files with correct ending (".class.php";".mdl.php";...)
it can find.
This happens inside of an autoload-method,
calling itself again when a depency (e.g. inheritance) occours.
when called again, it will skip all already called includes, since they are
require-_once_. Whith this loader i can just add a class file and it will
be loaded automaticly without needing me to register it somewhere
manually.
But it seems i have misunderstood the documentation,
because i now have noticed that when two classes extends the same class,
it will fail at the second child-class complaining that the parent-class is
missing instead of just calling autoload again for the same class,
which i thought will happen.
now i have to build the initial-loader much more complex, holding a cached
depency-list of classes or looking into the source-code when called.
Test script:
---------------
<?php
function __autoload($class){
// throws "Class C not found"
// i think it would be cool if it would call autoload again to load C,
// so this require_once wont be called again, class C would be loaded
and everything would be fine.
require_once("B.class.php"); // <-- "<?php class B extends C{}"
// this will never be called
require_once("C.class.php"); // <-- "<?php class C{}"
}
// this will call autoload to load class "C"
require_once("A.class.php"); // <-- "<?php class A extends C{}"
echo "this will never be echo'd...";
?>
Expected result:
----------------
<?php // EXPECTED:
function __autoload($class){
// calls autoload again, will be skipped in that second call
require_once("B.class.php"); // <-- "<?php class B extends C{}"
// will be included in second call, then skippen when back in first run
require_once("C.class.php"); // <-- "<?php class C{}"
}
// this will call autoload to load class "C"
require_once("A.class.php"); // <-- "<?php class A extends C{}"
// C, B and A are loaded correctly
?>
Actual result:
--------------
<?php // ACTUAL:
function __autoload($class){
// throws fatal error "Class C not found"
require_once("B.class.php"); // <-- "<?php class B extends C{}"
// this will never be called
require_once("C.class.php"); // <-- "<?php class C{}"
}
// this will call autoload to load class "C"
require_once("A.class.php"); // <-- "<?php class A extends C{}"
// none class clould be loaded, since it Fatal-error's at B.
?>
--
Edit bug report at http://bugs.php.net/bug.php?id=53351&edit=1
--
Try a snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=53351&r=trysnapshot52
Try a snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=53351&r=trysnapshot53
Try a snapshot (trunk):
http://bugs.php.net/fix.php?id=53351&r=trysnapshottrunk
Fixed in SVN:
http://bugs.php.net/fix.php?id=53351&r=fixed
Fixed in SVN and need be documented:
http://bugs.php.net/fix.php?id=53351&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=53351&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=53351&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=53351&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=53351&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=53351&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=53351&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=53351&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=53351&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=53351&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=53351&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=53351&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=53351&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=53351&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=53351&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=53351&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=53351&r=mysqlcfg
