php & rss

[jonahpup]

Hi there...

I am currently using an rss file to display news on my webpage.  I would like to change it a bit so that it only displays news that is not expired.

 

here is my rss file

<?xml version = "1.0"?>
<!DOCTYPE rss PUBLIC "-//Netscape Communications//DTD RSS 0.91//EN" 
"http://my.netscape.com/publish/formats/rss-0.91.dtd">

<rss version="0.91">
<channel>
<title>My Title</title>
<link></link>
<description></description>
<language>en-us</language>


<item>
<itemid>1</itemid>
<title>Ground Breaking News</title>
<link>http://www.google.com</link>
<datePosted>22/01/2008</datePosted> <!-- displayed dd/mm/yyyy | Does not currently display in page-->
<dateExpired>22/01/2008</dateExpired> <!-- displayed dd/mm/yyyy| Does not currently display in page -->
<description>This is the description of this news article
</description>
</item>



</channel>
</rss>

 

 

and here is the code I use to currently display the data on my page

 

<?php

class xItem {
  var $xTitle;
  var $xLink;
  var $xDescription;
}

// general vars
$sTitle = "";
$sLink = "";
$sDescription = "";
$arItems = array();
$itemCount = 0;

// ********* Start User-Defined Vars ************
// rss url goes here
$uFile = "http://www.mydomain.com/3views.rss";
// descriptions (true or false) goes here
$bDesc = true;
// font goes here
$uFont = "Verdana, Arial, Helvetica, sans-serif";
$uFontSize = "2";
// ********* End User-Defined Vars **************

function startElement($parser, $name, $attrs) {
  global $curTag;

  $curTag .= "^$name";

}

function endElement($parser, $name) {
  global $curTag;

  $caret_pos = strrpos($curTag,'^');

  $curTag = substr($curTag,0,$caret_pos);

}

function characterData($parser, $data) { global $curTag; // get the Channel information first
  global $sTitle, $sLink, $sDescription;  
  $titleKey = "^RSS^CHANNEL^TITLE";
  $linkKey = "^RSS^CHANNEL^LINK";
  $descKey = "^RSS^CHANNEL^DESCRIPTION";
  if ($curTag == $titleKey) {
    $sTitle = $data;
  }
  elseif ($curTag == $linkKey) {
    $sLink = $data;
  }
  elseif ($curTag == $descKey) {
    $sDescription = $data;
  }

  // now get the items 
  global $arItems, $itemCount;
  $itemTitleKey = "^RSS^CHANNEL^ITEM^TITLE";
  $itemLinkKey = "^RSS^CHANNEL^ITEM^LINK";
  $itemDescKey = "^RSS^CHANNEL^ITEM^DESCRIPTION";

  if ($curTag == $itemTitleKey) {
    // make new xItem    
    $arItems[$itemCount] = new xItem();     

    // set new item object's properties    
    $arItems[$itemCount]->xTitle = $data;
  }
  elseif ($curTag == $itemLinkKey) {
    $arItems[$itemCount]->xLink = $data;
  }
  elseif ($curTag == $itemDescKey) {
    $arItems[$itemCount]->xDescription = $data;
    // increment item counter
    $itemCount++;
  }
}

// main loop
$xml_parser = xml_parser_create();
xml_set_element_handler($xml_parser, "startElement", "endElement");
xml_set_character_data_handler($xml_parser, "characterData");
if (!($fp = fopen($uFile,"r"))) {
  die ("could not open RSS for input");
}
while ($data = fread($fp, 4096)) {
  if (!xml_parse($xml_parser, $data, feof($fp))) {
    die(sprintf("XML error: %s at line %d", xml_error_string(xml_get_error_code($xml_parser)), xml_get_current_line_number($xml_parser)));
  }
}
xml_parser_free($xml_parser);


// write out the items
<?php
for ($i=0;$i<count($arItems);$i++) {
    $txItem = $arItems[$i];
?>
			<li><a href = "<?php echo($txItem->xLink); ?>">
			<?php echo($txItem->xTitle); ?></a><br />
			<?php echo($txItem->xDescription); ?><br /><br /></li>
<? 
}
?>

 

what I am wanting to try and achieve, is to go through the rss file, and only display items that have not reached the expiry date.

ie: if (todaysdate <= expirydate) { show item }

but I dont know how to do that, and how to get the date information from the rss file to use it in the php...

 

Can anyone help me??

 

Cheers

Chris