From: [EMAIL PROTECTED]
Operating system: Linux
PHP version: 4.2.3
PHP Bug Type: Class/Object related
Bug description: A return() in an include won't skip registering classes below
When including a file which contains a class definition, performing a
return() ABOVE the class definition will still result in the class being
registered, if the class is completely new or if it extends a defined
class. The same with functions. I believe this has to do with PHP 4 not
caring where a function/class is declared in a script, so I expect PHP
performs some pre-registration of these items before executing the actual
code in the script. This behaviour is unexpected however when the user
wants to perform an explicit return() before the class definition.
Although not really needed, here's an example demonstrating this
behaviour:
-- myFile.php --
<?
include("myLib.php");
// This will be defined
if (class_exists("myclass")) {
echo("Original class IS defined!<br />");
} else {
echo("Original class IS NOT defined!<br />");
}
// This will be defined
if (class_exists("myclass_ex")) {
echo("Extended original class IS defined!<br />");
} else {
echo("Extended original class IS NOT defined!<br />");
}
// This will NOT be defined
if (class_exists("yourclass_ex")) {
echo("Extended non-existent class is defined!<br />");
} else {
echo("Extended non-existent class IS NOT defined!<br />");
}
// This will be defined
if (function_exists("myfunc")) {
echo("Function IS defined!<br />");
} else {
echo("Function IS NOT defined!<br />");
}
?>
-- myLib.php --
<?
return(1);
// Code won't execute
echo("Whoaa! return() didn't do a thing!");
// Class will however be defined
class myClass {}
// Extended class of defined class will be defined
class myClass_ex extends myClass {}
// Extended class of undefined class will NOT be defined however
class yourClass_ex extends yourClass {}
// But a plain function will be defined
function myFunc() {}
?>
You can see the code in action at
http://bogdan.lanifex.com/PHP_include_test/myFile.php
(a highlight_file(__FILE__) is added in both files for clarity at that
URL).
--
Edit bug report at http://bugs.php.net/?id=20333&edit=1
--
Try a CVS snapshot: http://bugs.php.net/fix.php?id=20333&r=trysnapshot
Fixed in CVS: http://bugs.php.net/fix.php?id=20333&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=20333&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=20333&r=needtrace
Try newer version: http://bugs.php.net/fix.php?id=20333&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=20333&r=support
Expected behavior: http://bugs.php.net/fix.php?id=20333&r=notwrong
Not enough info: http://bugs.php.net/fix.php?id=20333&r=notenoughinfo
Submitted twice: http://bugs.php.net/fix.php?id=20333&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=20333&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=20333&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=20333&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=20333&r=isapi
