Re: [PHP] how a function 'return' statement works
Hm... I tried quite a few variations on this. I can't seem to get any
displayable value out of this function.
function get_current_page_name()
{
$current_page_name = explode(/, $_SERVER['PHP_SELF']);
$current_page_name = $current_page_name[-1];
return $current_page_name ;
}
$errorcode = get_current_page_name();
echo $errorcode;
Nothing.
The only thing that works is $errorcode =
basename($_SERVER['PHP_SELF']), but that's not the point -- I still
don't understand why the function above doesn't return anything. In
this case, I'm positive that I've specified the last element of the
array. (Haven't I?)
Erik
On Wednesday, February 13, 2002, at 05:03 PM, Darren Gamble wrote:
I think what you're trying to do is return one particular element out
of the
array. If that's the case, just use something like:
return $current_page_name[-1]
to return the last element in the array.
Erik Price
Web Developer Temp
Media Lab, H.H. Brown
[EMAIL PROTECTED]
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] how a function 'return' statement works
Do you not have to make $_SERVER a global variable in the function ?
Alastair
Lightwood Consultancy Ltd
Hm... I tried quite a few variations on this. I can't seem to get any
displayable value out of this function.
function get_current_page_name()
{
$current_page_name = explode(/, $_SERVER['PHP_SELF']);
$current_page_name = $current_page_name[-1];
return $current_page_name ;
}
$errorcode = get_current_page_name();
echo $errorcode;
Nothing.
The only thing that works is $errorcode =
basename($_SERVER['PHP_SELF']), but that's not the point -- I still
don't understand why the function above doesn't return anything. In
this case, I'm positive that I've specified the last element of the
array. (Haven't I?)
Erik
On Wednesday, February 13, 2002, at 05:03 PM, Darren Gamble wrote:
I think what you're trying to do is return one particular element out
of the
array. If that's the case, just use something like:
return $current_page_name[-1]
to return the last element in the array.
Erik Price
Web Developer Temp
Media Lab, H.H. Brown
[EMAIL PROTECTED]
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] how a function 'return' statement works
$_SERVER (as well as all the $_* functions) in PHP 4.1 are automatically
global.
--
Aaron Gould
[EMAIL PROTECTED]
Web Developer
- Original Message -
From: Alastair Battrick [EMAIL PROTECTED]
To: Erik Price [EMAIL PROTECTED]; Darren Gamble
[EMAIL PROTECTED]
Cc: PHP [EMAIL PROTECTED]
Sent: Thursday, February 14, 2002 10:46 AM
Subject: RE: [PHP] how a function 'return' statement works
Do you not have to make $_SERVER a global variable in the function ?
Alastair
Lightwood Consultancy Ltd
Hm... I tried quite a few variations on this. I can't seem to get any
displayable value out of this function.
function get_current_page_name()
{
$current_page_name = explode(/, $_SERVER['PHP_SELF']);
$current_page_name = $current_page_name[-1];
return $current_page_name ;
}
$errorcode = get_current_page_name();
echo $errorcode;
Nothing.
The only thing that works is $errorcode =
basename($_SERVER['PHP_SELF']), but that's not the point -- I still
don't understand why the function above doesn't return anything. In
this case, I'm positive that I've specified the last element of the
array. (Haven't I?)
Erik
On Wednesday, February 13, 2002, at 05:03 PM, Darren Gamble wrote:
I think what you're trying to do is return one particular element out
of the
array. If that's the case, just use something like:
return $current_page_name[-1]
to return the last element in the array.
Erik Price
Web Developer Temp
Media Lab, H.H. Brown
[EMAIL PROTECTED]
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] how a function 'return' statement works
Erik,
function get_current_page_name()
{
$current_page_name = explode(/, $_SERVER['PHP_SELF']);
$current_page_name = $current_page_name[-1];
return $current_page_name ;
}
$errorcode = get_current_page_name();
echo $errorcode;
The only thing that works is $errorcode =
basename($_SERVER['PHP_SELF']), but that's not the point -- I still
don't understand why the function above doesn't return anything. In
this case, I'm positive that I've specified the last element of the
array. (Haven't I?)
Some extra debug echo statements will (dis)prove this...
=dn
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] how a function 'return' statement works
How about:
return $current_page_name[count($current_page_name)-1];
-Original Message-
From: Erik Price [mailto:[EMAIL PROTECTED]]
Can anyone give my puny mind an explanation as to why the following
function only returns the value Array ?
# ===
# get_current_page_name()
# ---
# Returns the current document
# Arguments
# ---
# no arguments
# ===
function get_current_page_name()
{
$current_page_name = explode(/, $_SERVER['PHP_SELF']);
$current_page_name = array_slice($current_page_name, -1);
return $current_page_name;
}
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] how a function 'return' statement works
On Thu, 2002-02-14 at 07:32, Erik Price wrote:
Hm... I tried quite a few variations on this. I can't seem to get any
displayable value out of this function.
function get_current_page_name()
{
$current_page_name = explode(/, $_SERVER['PHP_SELF']);
$current_page_name = $current_page_name[-1];
return $current_page_name ;
}
$errorcode = get_current_page_name();
echo $errorcode;
Nothing.
The only thing that works is $errorcode =
basename($_SERVER['PHP_SELF']), but that's not the point -- I still
don't understand why the function above doesn't return anything. In
this case, I'm positive that I've specified the last element of the
array. (Haven't I?)
Hi Erik. :)
No, you've asked for the element of $current_page_name which has the key
-1. To get the last element, probably the easiest thing to do is:
return $current_page_name[count($current_page_name) - 1];
However, a somewhat less expensive way to do it:
$path = $_SERVER['PHP_SELF'];
return substr($path, strrpos($path, '/') + 1);
(No array overhead.)
Cheers (man, it's sunny in Vancouver! Weird...),
Torben
Erik
On Wednesday, February 13, 2002, at 05:03 PM, Darren Gamble wrote:
I think what you're trying to do is return one particular element out
of the
array. If that's the case, just use something like:
return $current_page_name[-1]
to return the last element in the array.
I do not know where this came from, but it just ain't so.
--
Torben Wilson [EMAIL PROTECTED]
http://www.thebuttlesschaps.com
http://www.hybrid17.com
http://www.inflatableeye.com
+1.604.709.0506
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] how a function 'return' statement works
On Thursday, February 14, 2002, at 10:46 AM, Alastair Battrick wrote: Do you not have to make $_SERVER a global variable in the function ? $_SERVER is global AFAIK, but good thinking. All $_* variables are global (unlike the $HTTP_*_VARS arrays). Erik Erik Price Web Developer Temp Media Lab, H.H. Brown [EMAIL PROTECTED] -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] how a function 'return' statement works
On Thursday, February 14, 2002, at 02:32 PM, Lars Torben Wilson wrote:
I think what you're trying to do is return one particular element out
of the
array. If that's the case, just use something like:
return $current_page_name[-1]
to return the last element in the array.
I do not know where this came from, but it just ain't so.
Torben,
I just got this message now (where you explained a better way to do
it). I got a lot of feedback on this, and I feel even worse than before
for not realizing that I was trying to display the value of an array
element without specifying its key! and then this gem up top here got
me thinking I could shortcut the array_slice($current_page_name, -1,
1) to get the last element.
The substr trick works too, but I'm glad i was able to do it my way too.
here is the final function:
# ===
# get_current_page_name()
# ---
# Returns the current document
# Arguments
# ---
# no arguments
# ===
function get_current_page_name()
{
$current_page = $_SERVER['PHP_SELF'];
$current_page_name = explode(/, $current_page);
$pagename = array_slice($current_page_name, -1, 1);
return $pagename[0];
}
Erik Price
Web Developer Temp
Media Lab, H.H. Brown
[EMAIL PROTECTED]
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] how a function 'return' statement works
If your call to the function is: print get_current_page_name()
then you are getting the expected results, a description of the returned
value.
Change your call to: $myarrray = get_current_page_name();
Then iterate through $myarray to print each value;
-Original Message-
From: Erik Price [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 13, 2002 3:56 PM
To: PHP
Subject: [PHP] how a function 'return' statement works
Can anyone give my puny mind an explanation as to why the following
function only returns the value Array ?
# ===
# get_current_page_name()
# ---
# Returns the current document
# Arguments
# ---
# no arguments
# ===
function get_current_page_name()
{
$current_page_name = explode(/, $_SERVER['PHP_SELF']);
$current_page_name = array_slice($current_page_name, -1);
return $current_page_name;
}
(I know this does the same thing as 'basename($_SERVER['PHP_SELF'])', I
just want to understand something a bit more fundamental to the way
functions work)
Thanks,
Erik
Erik Price
Web Developer Temp
Media Lab, H.H. Brown
[EMAIL PROTECTED]
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] how a function 'return' statement works
Good day,
You're returning $current_page_name.
$current_page_name is set to the return value for array_slice.
And array_slice returns an array.
So, $current_page_name will be an array.
So, you'll always return an array.
I think what you're trying to do is return one particular element out of the
array. If that's the case, just use something like:
return $current_page_name[-1]
to return the last element in the array.
Darren Gamble
Planner, Regional Services
Shaw Cablesystems GP
630 - 3rd Avenue SW
Calgary, Alberta, Canada
T2P 4L4
(403) 781-4948
-Original Message-
From: Erik Price [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, February 13, 2002 2:56 PM
To: PHP
Subject: [PHP] how a function 'return' statement works
Can anyone give my puny mind an explanation as to why the following
function only returns the value Array ?
# ===
# get_current_page_name()
# ---
# Returns the current document
# Arguments
# ---
# no arguments
# ===
function get_current_page_name()
{
$current_page_name = explode(/, $_SERVER['PHP_SELF']);
$current_page_name = array_slice($current_page_name, -1);
return $current_page_name;
}
(I know this does the same thing as 'basename($_SERVER['PHP_SELF'])', I
just want to understand something a bit more fundamental to the way
functions work)
Thanks,
Erik
Erik Price
Web Developer Temp
Media Lab, H.H. Brown
[EMAIL PROTECTED]
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP] how a function 'return' statement works
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1
On Wednesday 13 February 2002 22:55, Erik Price wrote:
Can anyone give my puny mind an explanation as to why the following
function only returns the value Array ?
# ===
# get_current_page_name()
# ---
# Returns the current document
# Arguments
# ---
# no arguments
# ===
function get_current_page_name()
{
$current_page_name = explode(/, $_SERVER['PHP_SELF']);
$current_page_name = array_slice($current_page_name, -1);
return $current_page_name;
}
from the manual:
array array_slice ( array array, int offset [, int length])
array in, array out.. it wouldn't suprice me if when you changed the return
into
return $current_page_name.'';
it would become a string again.
Gerhard
-BEGIN PGP SIGNATURE-
Version: GnuPG v1.0.6 (GNU/Linux)
Comment: For info see http://www.gnupg.org
iD8DBQE8auY+Um/iHoGGwKMRAqaDAJ4v4zT+l4qvJN+Rei1zx7fdxrWV4wCgoly2
BoZqmifb7o6kaO6RzrZp0NU=
=NjIn
-END PGP SIGNATURE-
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
