[PHP] Predefined Variables In Classes
Hello Everyone,
I am a little confused. Why do predefined variables like $PHP_SELF or
$DOCUMENT_ROOT not process within a class, in the methods secifically. For
example:
?php
class someClass {
function someFunction () {
$root = $DOCUMENT_ROOT;
return $root;
}
function someFunction2 () {
$path = $this-someFunction() . $PHP_SELF;
return $path;
}
}
?
I just threw this together to give you an example of how I might be using
these two predefined variables in a class. The problem is that
$DOCUMENT_ROOT or $PHP_SELF won't parse or something. It just returns blank.
It is included in another page when needed, say somePage.php. Shouldn't
$PHP_SELF recognize the somePage.php as the current running script file, as
opposed to the class file where these two functions are called? If it
doesn't work that way then how do I do this without sending predefined
variable parameters to these functions?
Please note that register globals is on. I could not find any documentation
on this on php.net. Maybe someone can give me a hint of point it out for me
on the documentation. Thanks.
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Re: [PHP] Predefined Variables In Classes
Read:
http://www.php.net/variables.scope
Also note that $_SERVER is an autoglobal.
Regards,
Philip
On Sun, 26 Jan 2003, @ Nilaab wrote:
Hello Everyone,
I am a little confused. Why do predefined variables like $PHP_SELF or
$DOCUMENT_ROOT not process within a class, in the methods secifically. For
example:
?php
class someClass {
function someFunction () {
$root = $DOCUMENT_ROOT;
return $root;
}
function someFunction2 () {
$path = $this-someFunction() . $PHP_SELF;
return $path;
}
}
?
I just threw this together to give you an example of how I might be using
these two predefined variables in a class. The problem is that
$DOCUMENT_ROOT or $PHP_SELF won't parse or something. It just returns blank.
It is included in another page when needed, say somePage.php. Shouldn't
$PHP_SELF recognize the somePage.php as the current running script file, as
opposed to the class file where these two functions are called? If it
doesn't work that way then how do I do this without sending predefined
variable parameters to these functions?
Please note that register globals is on. I could not find any documentation
on this on php.net. Maybe someone can give me a hint of point it out for me
on the documentation. Thanks.
--
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] Predefined Variables In Classes
Well, I don't think this has anything to do with predefined variables being
global or not because I only have use for them within the specific methods.
The methods will capture their values and assign them to a variable inside
the function, which will return that variable at the end. The processing of
$PHP_SELF and $DOCUMENT_ROOT only happens in one place. I might be wrong,
not sure. But right now all I know is that I am confused and the link you
sent me didn't help explain what I need to know because it states no mention
of predefined variables. Can you perhaps give me an example of what you are
trying to tell me?
I read about variable scope and it says nothing about predefined variables.
So how will using the $_SERVER associate array help me with this? Remember
that globals is on, so I don't need to use $_SERVER, $_POST, $_GET, etc. to
get my values. But, in the meantime I'll go ahead and try using the
associate autoglobal arrays anyway, like $_SERVER, just to test it and to
see if it works for me. And if it does, it'll bug me until I find out why it
works. Thanks your input Philip. If anyone else has any thoughts or
explainations for me to understad this then that would be great.
Read:
http://www.php.net/variables.scope
Also note that $_SERVER is an autoglobal.
Regards,
Philip
-Original Message-
From: @ Nilaab [mailto:[EMAIL PROTECTED]]
Sent: Sunday, January 26, 2003 1:46 PM
To: Php-General
Subject: [PHP] Predefined Variables In Classes
Hello Everyone,
I am a little confused. Why do predefined variables like $PHP_SELF or
$DOCUMENT_ROOT not process within a class, in the methods secifically. For
example:
?php
class someClass {
function someFunction () {
$root = $DOCUMENT_ROOT;
return $root;
}
function someFunction2 () {
$path = $this-someFunction() . $PHP_SELF;
return $path;
}
}
?
I just threw this together to give you an example of how I might be using
these two predefined variables in a class. The problem is that
$DOCUMENT_ROOT or $PHP_SELF won't parse or something. It just
returns blank.
It is included in another page when needed, say somePage.php. Shouldn't
$PHP_SELF recognize the somePage.php as the current running
script file, as
opposed to the class file where these two functions are called? If it
doesn't work that way then how do I do this without sending predefined
variable parameters to these functions?
Please note that register globals is on. I could not find any
documentation
on this on php.net. Maybe someone can give me a hint of point it
out for me
on the documentation. Thanks.
--
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] Predefined Variables In Classes
Well, I don't think this has anything to do with predefined variables being global or not because I only have use for them within the specific methods. The methods will capture their values and assign them to a variable inside the function, which will return that variable at the end. The processing of $PHP_SELF and $DOCUMENT_ROOT only happens in one place. I might be wrong, not sure. But right now all I know is that I am confused and the link you sent me didn't help explain what I need to know because it states no mention of predefined variables. Can you perhaps give me an example of what you are trying to tell me? Predefined or not, it's still a variable. If you want a variable inside of your function to have the value of a variable outside of your function, then you have to make it global. $PHP_SELF inside of your function has no value because it's relative to the function, not the script. Just like $a inside of a function wouldn't have a value unless you assigned one to it. Using global $PHP_SELF at the beginning of your function (or method, same thing) will now make the variable $PHP_SELF have the same value as it does outside of your function. I read about variable scope and it says nothing about predefined variables. So how will using the $_SERVER associate array help me with this? Remember that globals is on, so I don't need to use $_SERVER, $_POST, $_GET, etc. to get my values. But, in the meantime I'll go ahead and try using the associate autoglobal arrays anyway, like $_SERVER, just to test it and to see if it works for me. And if it does, it'll bug me until I find out why it works. Thanks your input Philip. If anyone else has any thoughts or explainations for me to understad this then that would be great. $_SERVER['PHP_SELF'] will always work, regardless of variable scope or register_globals setting. The $_SERVER array is a superglobal, so it'll have the same value inside your method or outside of it, without you having to do anything special. Hope that helps. ---John W. Holmes... PHP Architect - A monthly magazine for PHP Professionals. Get your copy today. http://www.phparch.com/ -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
RE: [PHP] Predefined Variables In Classes
John,
YES! That's what I was looking for. Thanks for the explaination. It helps a
great deal. I had $_SERVER['DOCUMENT_ROOT'] work for me. But I'm still
struggling with $_SERVER['PHP_SELF'], because it's not returning anything.
So here's the second part to my question stated earlier. Let's say, for
example, I had a class included in someFile.php. The included class looks
like the class below:
?php
class someClass {
function someFunction () {
$root = $_SERVER['DOCUMENT_ROOT'];
return $root;
}
function someFunction2 () {
$path = $this-someFunction() . $_SERVER['PHP_SELF'];
return $path;
}
}
?
Shouldn't the value of $_SERVER['PHP_SELF'] contain the path of someFile.php
and not the path of the class file which was included in someFile.php? Or
what should this value be? I want the $_SERVER['PHP_SELF'] value to be
/path/someFile.php, or the value of whatever page included this class file
and called the methods of the class. How would I do that? Because right now
it returns a blank string.
-Original Message-
From: John W. Holmes [mailto:[EMAIL PROTECTED]]
Sent: Sunday, January 26, 2003 3:37 PM
To: '@ Nilaab'; 'Php-General'
Subject: RE: [PHP] Predefined Variables In Classes
Well, I don't think this has anything to do with predefined variables
being
global or not because I only have use for them within the specific
methods.
The methods will capture their values and assign them to a variable
inside
the function, which will return that variable at the end. The
processing
of
$PHP_SELF and $DOCUMENT_ROOT only happens in one place. I might be
wrong,
not sure. But right now all I know is that I am confused and the link
you
sent me didn't help explain what I need to know because it states no
mention
of predefined variables. Can you perhaps give me an example of what
you
are
trying to tell me?
Predefined or not, it's still a variable. If you want a variable inside
of your function to have the value of a variable outside of your
function, then you have to make it global. $PHP_SELF inside of your
function has no value because it's relative to the function, not the
script. Just like $a inside of a function wouldn't have a value unless
you assigned one to it. Using global $PHP_SELF at the beginning of
your function (or method, same thing) will now make the variable
$PHP_SELF have the same value as it does outside of your function.
I read about variable scope and it says nothing about predefined
variables.
So how will using the $_SERVER associate array help me with this?
Remember
that globals is on, so I don't need to use $_SERVER, $_POST, $_GET,
etc.
to
get my values. But, in the meantime I'll go ahead and try using the
associate autoglobal arrays anyway, like $_SERVER, just to test it and
to
see if it works for me. And if it does, it'll bug me until I find out
why
it
works. Thanks your input Philip. If anyone else has any thoughts or
explainations for me to understad this then that would be great.
$_SERVER['PHP_SELF'] will always work, regardless of variable scope or
register_globals setting. The $_SERVER array is a superglobal, so it'll
have the same value inside your method or outside of it, without you
having to do anything special.
Hope that helps.
---John W. Holmes...
PHP Architect - A monthly magazine for PHP Professionals. Get your copy
today. http://www.phparch.com/
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
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PHP General Mailing List (http://www.php.net/)
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RE: [PHP] Predefined Variables In Classes
Nevermind John, it worked! I had $_SERVER['PHP_SELF'] spelled as
$SERVER['PHP_SELF']. I appreciate your help! :P
-Original Message-
From: @ Nilaab [mailto:[EMAIL PROTECTED]]
Sent: Sunday, January 26, 2003 4:01 PM
To: Php-General
Subject: RE: [PHP] Predefined Variables In Classes
John,
YES! That's what I was looking for. Thanks for the explaination.
It helps a
great deal. I had $_SERVER['DOCUMENT_ROOT'] work for me. But I'm still
struggling with $_SERVER['PHP_SELF'], because it's not returning anything.
So here's the second part to my question stated earlier. Let's say, for
example, I had a class included in someFile.php. The included class looks
like the class below:
?php
class someClass {
function someFunction () {
$root = $_SERVER['DOCUMENT_ROOT'];
return $root;
}
function someFunction2 () {
$path = $this-someFunction() . $_SERVER['PHP_SELF'];
return $path;
}
}
?
Shouldn't the value of $_SERVER['PHP_SELF'] contain the path of
someFile.php
and not the path of the class file which was included in someFile.php? Or
what should this value be? I want the $_SERVER['PHP_SELF'] value to be
/path/someFile.php, or the value of whatever page included this class file
and called the methods of the class. How would I do that? Because
right now
it returns a blank string.
-Original Message-
From: John W. Holmes [mailto:[EMAIL PROTECTED]]
Sent: Sunday, January 26, 2003 3:37 PM
To: '@ Nilaab'; 'Php-General'
Subject: RE: [PHP] Predefined Variables In Classes
Well, I don't think this has anything to do with predefined variables
being
global or not because I only have use for them within the specific
methods.
The methods will capture their values and assign them to a variable
inside
the function, which will return that variable at the end. The
processing
of
$PHP_SELF and $DOCUMENT_ROOT only happens in one place. I might be
wrong,
not sure. But right now all I know is that I am confused and the link
you
sent me didn't help explain what I need to know because it states no
mention
of predefined variables. Can you perhaps give me an example of what
you
are
trying to tell me?
Predefined or not, it's still a variable. If you want a variable inside
of your function to have the value of a variable outside of your
function, then you have to make it global. $PHP_SELF inside of your
function has no value because it's relative to the function, not the
script. Just like $a inside of a function wouldn't have a value unless
you assigned one to it. Using global $PHP_SELF at the beginning of
your function (or method, same thing) will now make the variable
$PHP_SELF have the same value as it does outside of your function.
I read about variable scope and it says nothing about predefined
variables.
So how will using the $_SERVER associate array help me with this?
Remember
that globals is on, so I don't need to use $_SERVER, $_POST, $_GET,
etc.
to
get my values. But, in the meantime I'll go ahead and try using the
associate autoglobal arrays anyway, like $_SERVER, just to test it and
to
see if it works for me. And if it does, it'll bug me until I find out
why
it
works. Thanks your input Philip. If anyone else has any thoughts or
explainations for me to understad this then that would be great.
$_SERVER['PHP_SELF'] will always work, regardless of variable scope or
register_globals setting. The $_SERVER array is a superglobal, so it'll
have the same value inside your method or outside of it, without you
having to do anything special.
Hope that helps.
---John W. Holmes...
PHP Architect - A monthly magazine for PHP Professionals. Get your copy
today. http://www.phparch.com/
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php
--
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To unsubscribe, visit: http://www.php.net/unsub.php
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