A wildcard problem

[Valkrist]

Happy new years folks,

I have a problem. I'm trying to set up a webpage using php to handle much of my link interactions. Now, I have several categories, and each will have its own set of links.

So, let us say that I want to be able to pick different links for each color, and each color below will have several possible subcategories or objects. I would far rather use wildcards to specify each list than have to put an incredibly long if/elseif statement.


[CODE=php]
<?php
$pass = array('redtruck ','redhouse','r edhat','redshir t','redhair','r edbicycle','red wagon','greenwa gon','greentruc k','greenshirt' ,'greenlawn','g reenhouse','gre enhat','greenai rplane','bluesk y','bluejeans', 'bluebell','blu eeyes','bluesgu itar',);
if (in_array($_GET['id'], $pass)) {
if ($_GET['id'] == 'red' . '*'') {
include ($_SERVER['DOCUMENT_ROOT'].'/includes/redlinks.php'); }
elseif ($_GET['id'] == 'green' . '^') {
include ($_SERVER['DOCUMENT_ROOT'].'/includes/greenlinks.php' ); }
elseif ($_GET['id'] == 'blue' , '*') {
include ($_SERVER['DOCUMENT_ROOT'].'/includes/bluelinks.php') ; }
else {
header("HTTP/1.0 404 Not Found");
include ($_SERVER['DOCUMENT_ROOT'].'/includes/error.php');
}
?>
[/CODE]

Is there a way to do this, without having to write an incredibly long if/elseif statement to check for every single possible 'red*' 'green*' and 'blue*' posibilities?

[pbmods]

Heya, Valkrist. Welcome to TSDN!

Try something like this:
[code=php]
if( ! empty($_GET['id']) )
{
foreach
(
array
(
'red',
'green',
'blue'
)
as $__color
)
{
if( strpos($_GET['id'], $__color) === 0 )
{
include "{$_SERVER['DOCUMENT_ROOT']}/includes/{$__color}links .php";
$__found = true;
break;
}
}
}

if( empty($__found) )
{
header('HTTP/1.0 404 Not Found');
include $_SERVER['DOCUMENT_ROOT'] . '/includes/error.php'
}
[/code]

If $_GET['id'] exists and begins with one of those colors, then the matching colorlinks page will be loaded.

If $_GET['id'] does not exist or is invalid, the error page will be loaded.

[Valkrist]

Thank you for your help. I've almost got it.

So, now what I have is something like this:

[CODE=php]
if(! empty($_GET['id']) )
{
foreach
(
array
(
'red',
'grn',
'blu',
'ora',
'top'
)
as $__passcolor1
)
{
if( strpos($_GET['id'], $__passcolor1) === 0 )
{
if(! empty($_GET['id']) )
{
foreach
(
array
(
'bicycle',
'car',
'house',
'pants',
'shirt',
'sweater',
'telephone',
)
as $__passname1
)
{
if( strpos($_GET['id'], $__passname1) === 3 )
{
include ($_SERVER['DOCUMENT_ROOT'].'/includes/'.$_GET['id'].'.php');
$__found = true;
break;
}
else
{
include ($_SERVER['DOCUMENT_ROOT'].'/includes/error.php');
$__found = true;
break;
}
}
}
}
}
}
if(empty($__fou nd) )
{
include "{$_SERVER['DOCUMENT_ROOT']}/includes/top_main.php";
}
[/CODE]

However, this only gives me 'redbicycle' as a valid option.. any other option I try gives me the error message.

I tried taking out the 'ELSE' and suddenly 'redcar' will pass correctly, but if I were to type in, say, 'reddentist', instead of an error message or the top_main.php page, I just get a blank field with nothing in it.

So, to sum up:

If I remove the 'ELSE' statement, then I can get the ids of 'redbicycle' and 'redcar' to work correctly, but I have no error for someone manually putting in 'redmybuttlolzz '.

If I leave the ELSE statement in, it ONLY allows the very first possible combinatino "red + bicycle" to pass, and any other combination of variables gets me an error message (even ones that passed correctly when there was no ELSE statement).

What am I doing wrong?

[pbmods]

Heya, Valkrist.

substr() will be your friend here:

[code=php]
if( ! empty($_GET['id']) )
{
foreach
(
array
(
'red' => 3,
'green' => 5,
.
.
.
)
as $__color => $__len
)
{
if( strpos($_GET['id'], $__color) === 0 )
{
$__part2 = substr($_GET['id'], $__len);

echo $__part2;
exit;
}
}
}
[/code]