newbie querystring variables

#1 (**permalink**) 12-06-2003

I am new to PHP and am having problems using variables passed in a
querystring. For example:

<html>
<head>
<title>submit-vars.html</title>
<body>
<a href="http://localhost/print-vars.php?id=1"> test</a>
</body>
</html>

<html>
<head>
<title>print-vars.php</title>
</head>
<body>
The query string is: <?php echo $_SERVER['QUERY_STRING']; ?>
<? echo $_GET['id'] ?>
<?php printf("\nprint variable here->%s",$id); ?>
</body>
</html>

Clicking on the link in submit-vars.html calls print-vars.php producing the
following html source:

<html>
<head>
<title>print-vars.php</title>
</head>
<body>
The query string is: id=test
test

print variable here-></body>
</html>

From the tutorials I have read, it is my understanding that PHP
automatically create a variable when it sees a name=value pair in a
querystring. Therefore I would expect the word "test" to again be printed
after "print variable here->". The behavior is the same if I submit the
querystring using a form instead of embedding it in a link. The simple PHP
scripts I have written seem to work fine except for this. What am I
missing?

My configuration is as follows:
Apache/1.3.28 (Win32), PHP/4.3.4, on Win 2K.

Apache is running in a command shell, not as a service. I have PHP loading
as a DSO, not as CGI, and have added the following lines in my httpd.conf:

LoadModule php4_module "c:/php/sapi/php4apache.dll"
AddType application/x-httpd-php .php

Thanks!
-Kelly

#2 (**permalink**) 12-06-2003

Hello,

From PHP.INI

; - register_globals = Off [Security, Performance]
; Global variables are no longer registered for input data (POST, GET,
cookies,
; environment and other server variables). Instead of using $foo, you
must use
; you can use $_REQUEST["foo"] (includes any variable that arrives
through the
; request, namely, POST, GET and cookie variables), or use one of the
specific
; $_GET["foo"], $_POST["foo"], $_COOKIE["foo"] or $_FILES["foo"],
depending
; on where the input originates. Also, you can look at the
; import_request_variables() function.
; Note that register_globals is going to be depracated (i.e., turned off
by
; default) in the next version of PHP, because it often leads to
security bugs.
; Read http://php.net/manual/en/security.registerglobals.php for further
; information.

HTH
Elias

"Kelly Soden" <ksoden@alltel.net> wrote in message
news:LQiAb.757$R%4.87@fe10.private.usenetserver.co m...
> I am new to PHP and am having problems using variables passed in a
> querystring. For example:
>
> <html>
> <head>
> <title>submit-vars.html</title>
> <body>
> <a href="http://localhost/print-vars.php?id=1"> test</a>
> </body>
> </html>
>
> <html>
> <head>
> <title>print-vars.php</title>
> </head>
> <body>
> The query string is: <?php echo $_SERVER['QUERY_STRING']; ?>
> <? echo $_GET['id'] ?>
> <?php printf("\nprint variable here->%s",$id); ?>
> </body>
> </html>
>
> Clicking on the link in submit-vars.html calls print-vars.php producing
the
> following html source:
>
> <html>
> <head>
> <title>print-vars.php</title>
> </head>
> <body>
> The query string is: id=test
> test
>
> print variable here-></body>
> </html>
>
>
> From the tutorials I have read, it is my understanding that PHP
> automatically create a variable when it sees a name=value pair in a
> querystring. Therefore I would expect the word "test" to again be printed
> after "print variable here->". The behavior is the same if I submit the
> querystring using a form instead of embedding it in a link. The simple
PHP
> scripts I have written seem to work fine except for this. What am I
> missing?
>
> My configuration is as follows:
> Apache/1.3.28 (Win32), PHP/4.3.4, on Win 2K.
>
> Apache is running in a command shell, not as a service. I have PHP
loading
> as a DSO, not as CGI, and have added the following lines in my httpd.conf:
>
> LoadModule php4_module "c:/php/sapi/php4apache.dll"
> AddType application/x-httpd-php .php
>
> Thanks!
> -Kelly
>
>
>

#3 (**permalink**) 12-06-2003

Kelly Soden wrote:

> I am new to PHP and am having problems using variables passed in a
> querystring. For example:
>
> <html>
> <head>
> <title>submit-vars.html</title>
> <body>
> <a href="http://localhost/print-vars.php?id=1"> test</a>
> </body>
> </html>
>
> <html>
> <head>
> <title>print-vars.php</title>
> </head>
> <body>
> The query string is: <?php echo $_SERVER['QUERY_STRING']; ?>
> <? echo $_GET['id'] ?>
> <?php printf("\nprint variable here->%s",$id); ?>
> </body>
> </html>
>
> Clicking on the link in submit-vars.html calls print-vars.php producing
> the following html source:
>
> <html>
> <head>
> <title>print-vars.php</title>
> </head>
> <body>
> The query string is: id=test
> test
>
> print variable here-></body>
> </html>
>
>
> From the tutorials I have read, it is my understanding that PHP
> automatically create a variable when it sees a name=value pair in a
> querystring. Therefore I would expect the word "test" to again be printed
> after "print variable here->". The behavior is the same if I submit the
> querystring using a form instead of embedding it in a link. The simple
> PHP
> scripts I have written seem to work fine except for this. What am I
> missing?
>
> My configuration is as follows:
> Apache/1.3.28 (Win32), PHP/4.3.4, on Win 2K.
>
> Apache is running in a command shell, not as a service. I have PHP
> loading as a DSO, not as CGI, and have added the following lines in my
> httpd.conf:
>
> LoadModule php4_module "c:/php/sapi/php4apache.dll"
> AddType application/x-httpd-php .php
>
> Thanks!
> -Kelly

In my setup, I get the following source code (as expected):
--
<html>
<head>
<title>print-vars.php</title>
</head>
<body>
The query string is: id=1
1

print variable here->1</body>
</html>
--

The line:
printf("\nprint variable here->%s",$id);
prints the variable $id, which has the value '1' (set as a GET-variable in
the link on the first page).

Test is just the linked text on the first page, and does not get passed on
to the second page.

If you wanted the value 'test' transferred, you should have written:
<a href="http://localhost/print-vars.php?id=test">test</a>

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode