XML Wishlist

[makeshift_theory]

Now I would post my wish list app on here but I'm using it :P.  This is my second little XML gizmo so I hope it runs okay =).

Just upload this file to your server and create a "xml" directory in the same location.  Then just change the define tags to what you want.

So anywho here is the code, I am going to explain it just in case:

Adding Process:
> Takes information from form and assigns to array.
> Validates information, if empty throw an exception.
> Creates a temp file to place new data in.
> Attempts to open XML file and recreate it, appending our latest addition.
> Write xml to temp file.
> Unlink original xml file.
> Copy temp to original xml file name.

Show Process:
> Attempt to open xml file.
> Process file and display.

[code]
<?
//////////////////////////
// XML Wishlist
// By: Techno|ust           
// Date: 1/25/07
// Copyright: GNU
// OpenSource <3       
/////////////////////////
try
{
define("EOL","\n\n"); // Define our breaks
define("BOOKXML","xml/booklist.xml"); // Define our page
define("TEMP","xmltemp.xml"); // Define our temp file

function validate($title,$price,$link)
{ // Validates entry
if(empty($title) || empty($price) || empty($link))
return false;
else
return true;
}

if(isset($_POST['submit']))
{ // Handle a new Entry

$list = array(
"title" => $_POST['title'],
"price" => $_POST['price'],
"link" => "<a href=".$_POST['link']." target=_blank>Click here for Link</a>",
);

if(validate($list['title'],$list['price'],$list['link']) == false)
throw new Exception("One or more entries is invalid, please try again.");

if(!$temp = fopen(TEMP, "a+"))
throw new Exception("Error opening(creating) xml document");

if(!chmod(TEMP."", 0777))
throw new Exception("Could not chmod xml/".BOOKXML." successfully, please try again.");

$xdoc = simplexml_load_file(BOOKXML); // Load our XML FILE

$xml = "<?xml version=\"1.0\" ?><root>";

foreach($xdoc->book as $book)
// Get all of our existing structure
$xml .= "<book><title>".$book->title."</title><price>".$book->price."</price><link>".htmlentities($book->link)."</link></book>";

$xml .= "<book><title>".$list['title']."</title><price>".$list['price']."</price><link>".htmlentities($list['link'])."</link></book></root>";

if(file_exists(BOOKXML))
if(!unlink(BOOKXML)) // If file exists let's wipe it and recreate
throw new Exception("Could not remove xml/".BOOKXML." please remove the file manually or try again.");

if(!fwrite($temp,$xml))
throw new Exception("Error Writing to temp file.");

if(!fclose($temp))
throw new Exception("Cannot close file");

if(!copy(TEMP, BOOKXML))
throw new Exception("Could not rename temp file.");
else
echo nl2br("Added book titled ".$list['title']." to the wishlist".EOL);

}
elseif(isset($_POST['show']))
{ // Show Existing Entries

if(file_exists(BOOKXML))
{
$xml = simplexml_load_file(BOOKXML);

echo nl2br("<u><b>My Current Wishlist:</b></u>".EOL);
foreach($xml->book as $book)
{
echo nl2br("<B>TITLE:</B>".EOL.$book->title.EOL);
echo nl2br("<B>PRICE:</B>".EOL.$book->price.EOL);
echo nl2br(html_entity_decode("<B>LINK:</B>".EOL.$book->link.EOL));
}
echo nl2br("<hr><hr>".EOL);
}
else
throw new Exception("Booklist.xml does not exist, you must create a list before you can view");
}
}
catch(Exception $e)
{
echo nl2br("<font color=\"#FF0000\"><b>".$e->getMessage()."</b></font>".EOL);
}


?>
<form action="<?=$_SERVER['PHP_SELF']?>" method="POST">

Name of Book:
<input style="width:200px;" type="text" name="title" id="title">
<br><br>

Price:
<input style="width:200px;" type="text" name="price" id="price">
<br><br>

Link to View:
<input style="width:200px;" type="text" name="link" id="link">
<br><br>

<input type="submit" name="submit" id="submit" value="Add Book"> <input type="submit" name="show" id="show" value="Show Booklist">
</form>
[/code]

[makeshift_theory]

I have created [url=http://www.startrekrpg.com/booklistdemo/book.php]www.startrekrpg.com/booklistdemo/book.php[/url]  So you guys can check it out without installing.

PS> Okay, environment ready for testing.

[sanguinious]

a few notes:

you can add a price which is not numeric
you can leave the link blank but it still shows a link on the list
if you dont put in http:// then it tries to open it locally
i added as book title: <a href="what">link</a> - it said it had added to the list, but when trying to view it, errors