Req #46648 [Opn->Bgs]: Cannot redeclare declared function
Edit report at http://bugs.php.net/bug.php?id=46648&edit=1
ID: 46648
Updated by: jani@php.net
Reported by: satovey at yahoo dot com
Summary: Cannot redeclare declared function
-Status: Open
+Status: Bogus
Type: Feature/Change Request
-Package: Feature/Change Request
+Package: *General Issues
Operating System: Win98
PHP Version: 5.2.6
Block user comment: N
Private report: N
New Comment:
Chose option 1.
Previous Comments:
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[2008-12-16 16:01:46] zyss at mail dot zp dot ua
include_once can be used instead of include (in this case) - file will
not be included twice so there will be no errors about the function
redeclaration.
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[2008-11-25 15:21:25] satovey at yahoo dot com
112508
Last night while trying to create a stripped down
version of my script so that you guys could recreate
the bug, I discovered what was actually causing it and
it was not anything that was suggested.
This turns out to not be an issue with the interpreter
or zend framework but the way errors are reported.
To recreate this error you need to do the following:
1) You will need three files.
testbug.php, testincl1.php, testincl2.php
create a directory called testdir and put
testincl1.php and testincl2.php within it.
2) Within testbug.php put the following code:
//error reporting
ini_set('display_errors', '1');
error_reporting(E_ALL);
include("testdir/testincl1.php");
include("testdir/testincl2.php");
3) Within testincl1.php put the following code.
echo "testincl1.php<br>";
include ("testincl2.php");
At this point, you may already see the problem.
If not step 4 will enlighten you :)
4) Within testincl2.php put the following code.
echo "testincl2.php<br>";
function testfunc(){echo "testfunction<br>";}
testfunc();
The reason I didn't immediately catch this is due to the
fact that in my main file which calls include2.php the
second time is that the command is on line 161
So the real issue is not an engine bug but an error reporting
bug.
*** Solutions ***
Because the error does not refer to the two seperate
include commands for testincl2.php,
the error is obscure and hard to find.
There are three ways to handle this issue.
1) Do nothing as it is a bug in the programmers code and
has nothing to do with PHP. That's the easy way out but
you'll keep getting these bugs reported when they for
apparent reason occur.
2) Change the debugger so that it refers to both include
commands and where they are located.
3) The best approach is to implement a new
programming rule for includes. As no two functions
can have the same name, neither should any two
directory/includefile.php bare the same name.
Under this rule
** Allowed **
/dir1/includefile.php
and
/dir2/includefile.php
would be allowed because they reside under two
different directories. This is desirable as it
is necessary for templates and themes to work
properly.
** Not Allowed **
include ("dir/includefile.php")
include ("dir/includefile.php")
would not be allowed as they are the same file
within the same directory.
include ("dir/includefile2.php")
within the index.php file
and
/dir2/includefile.php which contains
include ("includefile2.php")
would not be allowed as they are the same file
within the same directory.
In this way, an error message would point to
both include instances and what line they
occur on.
If the same bug in other versions have not been found out, this
is most likely what caused them. Following either suggestion two
or three and patching previous versions to correct the issue
will take care of it permanently.
Take care.
Scott
------------------------------------------------------------------------
[2008-11-23 15:14:01] crrodriguez at opensuse dot org
XAMMP includes Zend Optimizer and possible other zend extensions, please
disable all zend extensions and report back if the problem still exists.
------------------------------------------------------------------------
[2008-11-22 22:48:54] satovey at yahoo dot com
Description:
------------
PHP seems to think that a function is redeclared.
1) This is the first function declared.
2) This is not occurring with any other declared functions.
3) This error occurs even when the entire function is placed
on a single line.
4) The error occurs on this function call whether it is in
the given file or inside an include file.
Reproduce code:
---------------
This is the system
Win98 running the following.
Apache Version
Apache/2.2.9 (Win32)
DAV/2 mod_ssl/2.2.9
OpenSSL/0.9.8h mod_autoindex_color
PHP/5.2.6
xampp version Version 1.6.7
Here is the error message.
Fatal error: Cannot redeclare getadminmodules()
(previously declared in
C:\xampp\htdocs\oldwebsite\YevotasSite\YevotasSite.php:26)
in C:\xampp\htdocs\oldwebsite\YevotasSite\YevotasSite.php on
line 26
Code for line 26 is as follows:
function getadminmodules(){}
Expected result:
----------------
The syntax is correct and therefore no errors are expected.
Actual result:
--------------
Fatal error occurs.
------------------------------------------------------------------------
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