Working with "RSS feeds/XML and PHP" Please Help!.

[drhart4000]

Ok, let me explain, I have a php script that quarries an rss feed and cases it in an array. I want to be able to specifies a tag / search in which will pull out a specific item from the feed and download it.

so lets say i have an rss feed and in that rss feed i have something like this:

begin Rss
...
- <item>
<title>key-324394n-title of doc</title>

- <description>
bla bla bla description
</description>
<link>http://place_to_donload_file.com/directory/file.ext</link>
- </item>
...
end Rss

No that not the whole file thats just one off the item feeds in the rss xml.

ok so, I want a php document to quarray the RSS feed and search for "key-324394n*" in other words the php script looks for <items> with a title that start with "key-324394n" and the rest does not matter thus a * means that anything else can come after it.

so it finds the item with the key-324394n and downloads the file acording to the <link> tag.
Thanks for any help,

Here is my curent rss reader i got from a php script source. I would realy like help to costumize this script to do what i want or if someone could past a new one to do what i want or point me in the right direction. Thank you.

[code]<?php
/*  PHP RSS Reader v1.1
    By Richard James Kendall
    Bugs to [email protected]
    Free to use, please acknowledge me
   
    Place the URL of an RSS feed in the $file variable.
 
  The $rss_channel array will be filled with data from the feed,
  every RSS feed is different by by and large it should contain:
 
  Array {
  [TITLE] = feed title
  [DESCRIPTION] = feed description
  [LINK] = link to their website
 
  [IMAGE] = Array {
  [URL] = url of image
  [DESCRIPTION] = alt text of image
  }
 
  [ITEMS] = Array {
  [0] = Array {
  [TITLE] = item title
  [DESCRIPTION] = item description
  [LINK = a link to the story
  }
  .
  .
  .
  }
  }
 
  By default it retrives the Reuters Oddly Enough RSS feed. The data is put into the array
  structure so you can format the information as you see fit.
*/
set_time_limit(0);

$file = "http://drhart4000.blip.tv/?skin=rss";

$rss_channel = array();
$currently_writing = "";
$main = "";
$item_counter = 0;

function startElement($parser, $name, $attrs) {
  global $rss_channel, $currently_writing, $main;
  switch($name) {
  case "RSS":
  case "RDF:RDF":
  case "ITEMS":
  $currently_writing = "";
  break;
  case "CHANNEL":
  $main = "CHANNEL";
  break;
  case "IMAGE":
  $main = "IMAGE";
  $rss_channel["IMAGE"] = array();
  break;
  case "ITEM":
  $main = "ITEMS";
  break;
  default:
  $currently_writing = $name;
  break;
  }
}

function endElement($parser, $name) {
  global $rss_channel, $currently_writing, $item_counter;
  $currently_writing = "";
  if ($name == "ITEM") {
  $item_counter++;
  }
}

function characterData($parser, $data) {
global $rss_channel, $currently_writing, $main, $item_counter;
if ($currently_writing != "") {
switch($main) {
case "CHANNEL":
if (isset($rss_channel[$currently_writing])) {
$rss_channel[$currently_writing] .= $data;
} else {
$rss_channel[$currently_writing] = $data;
}
break;
case "IMAGE":
if (isset($rss_channel[$main][$currently_writing])) {
$rss_channel[$main][$currently_writing] .= $data;
} else {
$rss_channel[$main][$currently_writing] = $data;
}
break;
case "ITEMS":
if (isset($rss_channel[$main][$item_counter][$currently_writing])) {
$rss_channel[$main][$item_counter][$currently_writing] .= $data;
} else {
//print ("rss_channel[$main][$item_counter][$currently_writing] = $data<br>");
$rss_channel[$main][$item_counter][$currently_writing] = $data;
}
break;
}
}
}

$xml_parser = xml_parser_create();
xml_set_element_handler($xml_parser, "startElement", "endElement");
xml_set_character_data_handler($xml_parser, "characterData");
if (!($fp = fopen($file, "r"))) {
die("could not open XML 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);

// output as HTML
print ("<html><head><title>PHP RSS Reader</title></head><body>");
if (isset($rss_channel["IMAGE"])) {
print ("<a href=\"" . $rss_channel["LINK"] . "\" target=\"_blank\"><img border=\"0\" src=\"" . $rss_channel["IMAGE"]["URL"] . "\" align=\"middle\" alt=\"" . $rss_channel["IMAGE"]["TITLE"] . "\"></a>&nbsp;&nbsp;<font size=\"5\">" . $rss_channel["TITLE"] . "</font><br><br>");
} else {
print ("<font size=\"5\">" . $rss_channel["TITLE"] . "</font><br><br>");
}
print ("<i>" . $rss_channel["DESCRIPTION"] . "</i><br><br>");
if (isset($rss_channel["ITEMS"])) {
if (count($rss_channel["ITEMS"]) > 0) {
for($i = 0;$i < count($rss_channel["ITEMS"]);$i++) {
print ("\n<table width=\"100%\" border=\"1\"><tr><td width=\"100%\"><a href=\"" . $rss_channel["ITEMS"][$i]["LINK"] . "\" target=\"_blank\"><h2>" . $rss_channel["ITEMS"][$i]["TITLE"] . "</h2></a></b>");
print ("<i>" . html_entity_decode($rss_channel["ITEMS"][$i]["DESCRIPTION"]) . "</i>");
print ("</td></tr></table><br>");
}
} else {
print ("<b>There are no articles in this feed.</b>");
}
}
print ("</body></html>");
?>[/code]

Wayne,