ID: 49060
User updated by: mccarre at uwindsor dot ca
Reported By: mccarre at uwindsor dot ca
Status: Open
Bug Type: Feature/Change Request
Operating System: Mac OS X
PHP Version: 5.2.10
New Comment:
"Because files are included at run time where the instruction is
located, it may not ever be evaluated."
Sorry I could have made this much more understandable by adding to it.
Rephrasing I would say:
"Because files are included at run time where the instruction is
located, it may not ever be evaluated; for example if a function is
called that exits the script."
That should give a better idea of the complication I find with includes
that causes my code road bump, which causes me to make this request.
Previous Comments:
------------------------------------------------------------------------
[2009-07-26 01:19:06] mccarre at uwindsor dot ca
Description:
------------
Because files are included at run time where the instruction is
located, it may not ever be evaluated. This is to be expected.
However, this creates a problem with code that may call a function that
is in one of the preceding included files. You generally want to call
that function LAST, only after you've included all other files. (This is
for nested include relations)
The only scenario I have found this relevant thus far is calling php
functions using AJAX.
Reproduce code:
---------------
---
>From manual page: function.include-once
---
I'll provide a simple example, because the one I came upon is too
large.
Imagine you have fileA.php:
<?php
include_once "fileB.php";
include_once "fileC.php";
include_once "callA.php";
//when fileB.php includes callA.php and callA calls fncA and it
tries to call fncC, although fncC is in this files includes list, that
line has yet to be executed, therefor it will not be able to find the
function. If you could include_last "callA.php", then the first
include_last "callA.php" in fileB.php would be ignored, and the
callA.php in fileA.php would be included after fileC.php is included.
=)
function fncA() { fncC(); }
?>
You normally wouldn't do the following, but if there was generic code
to call an AJAX function here it would do this.
fileB.php:
<?php
//reminder that include_once "fileC.php"; hasn't been executed yet.
include_once "callA.php";
?>
fileC.php:
<?php
fncC(){ print "hello"; }
?>
callA.php:
<?php
fncA();
?>
I posted another example in the comments of include_once.
Expected result:
----------------
function not found.
Actual result:
--------------
with include_last, the function will be called and "hello" would be
printed.
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=49060&edit=1
