From: james at safesearching dot com
Operating system: redhat 7.3
PHP version: 5.0.4
PHP Bug Type: Dynamic loading
Bug description: default behaviour of class_exists/__autoload() breaks PEAR
classes (and others)
Description:
------------
The default behaviour of class_exists calling __autoload breaks BC for end
user scripts which rely on other code outside that users control (ie PEAR
classes).
Many PEAR classes such as Calendar and DB_DataObject use class_exists to
load other classes...
Simply adding an __autoload function to a script using these classes
generates a Fatal error.
An option was added to allow a class_exists($name, FALSE) call to prevent
an __autoload call... but as end users don't have control over things like
PEAR classes, this isn't a viable fix to bug #28333.
Perhaps more reasonably, class_exists should not call __autoload by
default so as to maintain BC... and allow users to explicity request that
behaviour with a second parameter of TRUE.
Reproduce code:
---------------
require_once('Calendar/Calendar.php');
$cal = new Calendar();
function __autoload($name) {
require_once($name);
}
Expected result:
----------------
Expect no output (ie no errors).
Actual result:
--------------
Warning: __autoload(Calendar_Engine_UnixTS): failed to open stream: No
such file or directory in /home/james/test.php on line 8
Fatal error: __autoload(): Failed opening required
'Calendar_Engine_UnixTS' (include_path='.:/usr/local/lib/php') in
/home/test.php on line 8
--
Edit bug report at http://bugs.php.net/?id=33459&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=33459&r=trysnapshot4
Try a CVS snapshot (php5.0):
http://bugs.php.net/fix.php?id=33459&r=trysnapshot50
Try a CVS snapshot (php5.1):
http://bugs.php.net/fix.php?id=33459&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=33459&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=33459&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=33459&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=33459&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=33459&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=33459&r=support
Expected behavior: http://bugs.php.net/fix.php?id=33459&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=33459&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=33459&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=33459&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=33459&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=33459&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=33459&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=33459&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=33459&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=33459&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=33459&r=mysqlcfg
