Odd variable Bug

[Lost arcade]

I am using PHP 4.3.4 and found something strange with a variable name.
When I try to use "$company" variable (lowercase), I get odd behavior
from that variable. The name of my php file is "company.ph p" but I
didn't think that php associated them together. The behavior is that
"$company" will take on values of the previously accessed $_GET
variable. I fixed it by using "$company_i nfo" variable instead but I
would really like to know why the "$company" variable seems to be a
landmine.

The code includes the core Pear libraries and the pear IT library but
nothing else. I thought that system variables took the form of
"$_VAR"?

If anyone has run into odd behavior like this before let me know so I
can
find out what variables to avoid in the future.

Sam

[Gary L. Burnore]

On 30 Jul 2004 17:18:41 -0700, gl********@adel phia.net (Lost arcade)
wrote:

I am using PHP 4.3.4 and found something strange with a variable name.
When I try to use "$company" variable (lowercase), I get odd behavior
from that variable. The name of my php file is "company.ph p" but I
didn't think that php associated them together. The behavior is that
"$company" will take on values of the previously accessed $_GET
variable. I fixed it by using "$company_i nfo" variable instead but I
would really like to know why the "$company" variable seems to be a
landmine.

The code includes the core Pear libraries and the pear IT library but
nothing else. I thought that system variables took the form of
"$_VAR"?

If anyone has run into odd behavior like this before let me know so I
can
find out what variables to avoid in the future.

Any $_GET("varname" > will override $varname, no?

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[steve]

"Lost arcade" wrote:

I am using PHP 4.3.4 and found something strange with a variable name. When I try to use "$company" variable (lowercase), I get odd behavior from that variable. The name of my php file is "company.ph p" but I didn’t think that php associated them together. The behavior is
that
"$company" will take on values of the previously accessed $_GET
variable. I fixed it by using "$company_i nfo" variable instead but I would really like to know why the "$company" variable seems to be a landmine.

The code includes the core Pear libraries and the pear IT library but nothing else. I thought that system variables took the form of
"$_VAR"?

If anyone has run into odd behavior like this before let me know so I can
find out what variables to avoid in the future.

Sam

Sam, that behavior is due to register_globas being ON. This is not a
good thing. You would want register globals off. It "should" be
OFF by default in your version of php.
http://www.desilva.biz/apache/regblsoff.html

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[Gary L. Burnore]

On 30 Jul 2004 21:58:49 -0400, steve <Us************ @dbForumz.com>
wrote:

"Lost arcade" wrote:

I am using PHP 4.3.4 and found something strange with a variable

name.

When I try to use "$company" variable (lowercase), I get odd

behavior

from that variable. The name of my php file is "company.ph p" but

I

didn’t think that php associated them together. The behavior is
that
"$company" will take on values of the previously accessed $_GET
variable. I fixed it by using "$company_i nfo" variable instead

but I

would really like to know why the "$company" variable seems to be

a

landmine.

The code includes the core Pear libraries and the pear IT library

but

nothing else. I thought that system variables took the form of
"$_VAR"?

If anyone has run into odd behavior like this before let me know so

I

can
find out what variables to avoid in the future.

Sam

Sam, that behavior is due to register_globas being ON. This is not a
good thing. You would want register globals off. It "should" be
OFF by default in your version of php.
http://www.desilva.biz/apache/regblsoff.html

Heh. WAAAAY back in a previous version somewhere, it must have been on
by default? I've not used the same variable name as a $_GET or $_POST
variable because I thought I had to. Not that it hurts to use
slightly different names.

(I usually use:

$VariableName = $_POST['variable_name'];

)


--
gburnore@databa six dot com
---------------------------------------------------------------------------
How you look depends on where you go.
---------------------------------------------------------------------------
Gary L. Burnore | ÝÛ³ºÝ³Þ³ºÝ³³ÝÛº ݳ޳ºÝ³Ý³Þ³ºÝ³Ý ÝÛ³
| ÝÛ³ºÝ³Þ³ºÝ³³ÝÛº ݳ޳ºÝ³Ý³Þ³ºÝ³Ý ÝÛ³
DataBasix | ÝÛ³ºÝ³Þ³ºÝ³³ÝÛº ݳ޳ºÝ³Ý³Þ³ºÝ³Ý ÝÛ³
| ÝÛ³ 3 4 1 4 2 ݳ޳ 6 9 0 6 9 ÝÛ³
Black Helicopter Repair Svcs Division | Official Proof of Purchase
=============== =============== =============== =============== ===============
Want one? GET one! http://signup.databasix.com
=============== =============== =============== =============== ===============

[steve]

"Gary L. Burnore" wrote:

On 30 Jul 2004 21:58:49 -0400, steve
<Us************ @dbForumz.com>
wrote:

"Lost arcade" wrote:

I am using PHP 4.3.4 and found something strange with a variable

name.

When I try to use "$company" variable (lowercase), I get oddbehavior

from that variable. The name of my php file is "company.ph p" but

I

didn’t think that php associated them together. The

behavior is that
"$company" will take on values of the previously accessed $_GET variable. I fixed it by using "$company_i nfo" variable instead

but I

would really like to know why the "$company" variable seems

to be

a

landmine.

The code includes the core Pear libraries and the pear IT

library

but

nothing else. I thought that system variables took the form

of "$_VAR"?

If anyone has run into odd behavior like this before let me

know so

I

can
find out what variables to avoid in the future.

Sam

Sam, that behavior is due to register_globas being ON. This is

not a

good thing. You would want register globals off. It "should"

beOFF by default in your version of php.
http://www.desilva.biz/apache/regblsoff.html

Heh. WAAAAY back in a previous version somewhere, it must have been

on by default? I’ve not used the same variable name as a $_GET or
$_POST
variable because I thought I had to. Not that it hurts to use
slightly different names.

(I usually use:

$VariableName = $_POST[’variable_name’];

)

register_globas is a left-over from older versions of php. When you
posted a variable, it would be available both as $_POST[’xyz’] and
$xyz. That was a BAD thing, since someone could insert some POST or
GET variables and they would show up as regular variables.

So as you state, one should always use $_POST or $_GET to access such
variables, and if at all possible (except due to old code) turn off
register_global s.

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Articles individually checked for conformance to usenet standards
Topic URL: http://www.dbForumz.com/PHP-Odd-vari...ict135185.html
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