From: christoph at ziegenberg dot de
Operating system: WinXP SP2
PHP version: 5.1.6
PHP Bug Type: Performance problem
Bug description: __autoload unnecessarily called for type hinting
Description:
------------
if i check if a variable is an instance of specific class with
"instanceof" and the class i check for has not been loaded, __autoloader()
is not called (as expected).
if i do the "same" check by type hinting, the __autoloader() function is
called, which normally leads to including the required class file and so
unnecessarily consumes memory and time.
Reproduce code:
---------------
<?php
error_reporting(E_ALL);
class ClassName
{
public $var = 'bla';
}
function test (OtherClassName $object)
{
}
function __autoload($class)
{
print "try to load class $class";
}
$obj = new ClassName;
if (!($obj instanceof OtherClassName))
{
echo "no instance of OtherClassName<br />";
}
test($obj);
?>
Expected result:
----------------
no instance of OtherClassName
Actual result:
--------------
no instance of OtherClassName
try to load class OtherClassName
Fatal error: Class 'OtherClassName' not found in [...] on line 7
--
Edit bug report at http://bugs.php.net/?id=39003&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=39003&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=39003&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=39003&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=39003&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=39003&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=39003&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=39003&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=39003&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=39003&r=support
Expected behavior: http://bugs.php.net/fix.php?id=39003&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=39003&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=39003&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=39003&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=39003&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=39003&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=39003&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=39003&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=39003&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=39003&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=39003&r=mysqlcfg
