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New to php
Joined: 25 Nov 2005
Posts: 1
New to php
I`m crossing over from ColdFusion and I use a database to deliver
content based on "pageName". I would like to test for page name and if
it doesn`t exist, reload the default page content. I find my sites
work until I type a url string that doesn`t exist in the database,
then I get sql errors on the page for navigation results
because "parentID is "null". Its so easy in ColdFusion but I just
don`t get it here...
Joined: 22 Nov 2005
Posts: 2
New to php
Hi there,
I`m gathering from your question you are looking to test the variable
pageName from the url like:
http://www.yoursite.com/index.php?pageName=smoke
and if there is no pageName then set load the default. Personally I
would right it like this.
if(isset($_GET[`pageName`])){
// load the requested page
}else{
// load the default page
}
The $_GET variable is a Superglobal that breaks down the request of
the GET (everything after the ? in the URL). If you are unsure if this
comes from the GET method you can also use the superglobal $_REQUEST
which is another array that handles both GET and POST methods.
You check to see if the array element is actually given a value using
the isset() function. If you attempted an is_null() function and there
is no element then PHP will throw a warning.
I hope this helps you on your way.
--- In php-objects@yahoogroups.com, "hd85flt" <hd85flt@y...> wrote:
>
> I`m crossing over from ColdFusion and I use a database to deliver
> content based on "pageName". I would like to test for page name and if
> it doesn`t exist, reload the default page content. I find my sites
> work until I type a url string that doesn`t exist in the database,
> then I get sql errors on the page for navigation results
> because "parentID is "null". Its so easy in ColdFusion but I just
> don`t get it here...
>
Joined: 02 May 2005
Posts: 7
New to php
I think thats not the problem, I think the problem is he tries to select
the page from the database, but the page does not exists on the database.
You should write a method to test if the page exists in the database
before trying to display it.
if(isset($_GET[`pageName`]) && pageExists($_GET[`pageName`])){
// load the requested page
}else{
// load the default page
}
function pageExists($pageName) {
$sql = "select count(*) from table where page_name = `$pageName`";
if (RDBMS_query($sql)) {
return true;
} else {
return false;
}
}
Eduardo
Jason Reed wrote:
> Hi there,
>
> I`m gathering from your question you are looking to test the variable
> pageName from the url like:
>
> http://www.yoursite.com/index.php?pageName=smoke
>
> and if there is no pageName then set load the default. Personally I
> would right it like this.
>
> if(isset($_GET[`pageName`])){
> // load the requested page
> }else{
> // load the default page
> }
>
> The $_GET variable is a Superglobal that breaks down the request of
> the GET (everything after the ? in the URL). If you are unsure if this
> comes from the GET method you can also use the superglobal $_REQUEST
> which is another array that handles both GET and POST methods.
>
> You check to see if the array element is actually given a value using
> the isset() function. If you attempted an is_null() function and there
> is no element then PHP will throw a warning.
>
> I hope this helps you on your way.
> --- In php-objects@yahoogroups.com, "hd85flt" <hd85flt@y...> wrote:
> >
> > I`m crossing over from ColdFusion and I use a database to deliver
> > content based on "pageName". I would like to test for page name and if
> > it doesn`t exist, reload the default page content. I find my sites
> > work until I type a url string that doesn`t exist in the database,
> > then I get sql errors on the page for navigation results
> > because "parentID is "null". Its so easy in ColdFusion but I just
> > don`t get it here...
> >
>
>
>
>
>
>
> PHP Data object relational mapping generator -
> http://www.meta-language.net/
>
>
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Joined: 27 Apr 2005
Posts: 7
New to php
I would add another construct, which will give you more flexibility in the
future:
switch($_GET[`pageName`]) { //if you`re not sure how the variable will pass
use $_REQUEST[`pageName`]
case ``:
//load requested page
break;
case ``:
//do something else
break;
default:
//function or load default page
break;
}
-----Original Message-----
From: php-objects@yahoogroups.com [mailto:php-objects@yahoogroups.com] On
Behalf Of Jason Reed
Sent: Friday, November 25, 2005 2:35 AM
To: php-objects@yahoogroups.com
Subject: [php-objects] Re: New to php
Hi there,
I`m gathering from your question you are looking to test the variable
pageName from the url like:
http://www.yoursite.com/index.php?pageName=smoke
and if there is no pageName then set load the default. Personally I would
right it like this.
if(isset($_GET[`pageName`])){
// load the requested page
}else{
// load the default page
}
The $_GET variable is a Superglobal that breaks down the request of the GET
(everything after the ? in the URL). If you are unsure if this comes from
the GET method you can also use the superglobal $_REQUEST which is another
array that handles both GET and POST methods.
You check to see if the array element is actually given a value using the
isset() function. If you attempted an is_null() function and there is no
element then PHP will throw a warning.
I hope this helps you on your way.
--- In php-objects@yahoogroups.com, "hd85flt" <hd85flt@y...> wrote:
>
> I`m crossing over from ColdFusion and I use a database to deliver
> content based on "pageName". I would like to test for page name and if
> it doesn`t exist, reload the default page content. I find my sites
> work until I type a url string that doesn`t exist in the database,
> then I get sql errors on the page for navigation results because
> "parentID is "null". Its so easy in ColdFusion but I just don`t get it
> here...
>
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