Reading the VDC RSS File In PHP

02-18-2005, 08:04 PM

Reading the VDC RSS File In PHP

Well I've spent an hour on this script hoping to make an RSS reader just for VDC (here) but was unfruitful at the fact that I could not find the actual file in the first place, however, Heres the class, if anyone wants to make something of it, go ahead. Or maybe some help locating the file?

Basically what I did was opened the RSS file with fopen, read the file to its full length (since there is only 25 items in the RSS file to begin with) and then just had the class take care of the rest. Then later used preg_match_all and regular expressions (very simple ones) to get the contents, used for- statements with $i to output the tables with the images and other things based on the configuration at the top of the file. However, I've spent almost 30 minutes trying to figure out why it was not working, I've been moving stuff around and then realized that I had used the @-command to surpress errors when opening and reading the file, so I had no idea that the script wasn't reading the file in the first place.

What did I do wrong? I tried a much more simple version just trying to opent he RSS file and I got an error at that, so Im pretty sure the script just isn't working because of that, but I wouldn't know.

Anyways, if you would like to use this for a different RSS file, feel free too, just edit the regular expressions on lines 150-160.

Attached Files

vdcorerss.zip (3.2 KB, 2 views)

Last edited by borednerd : 02-18-2005 at 08:37 PM.

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borednerd

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#2 (permalink)

02-19-2005, 11:00 AM

hmm ill take a look. I can give you the code i used for the front page if you want.

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missionsix

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#3 (permalink)

02-19-2005, 03:14 PM

Yeah that would be nice..Ive been having trouble locating the file

..whenever I tried to open or read it, I always end up with an error.

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borednerd

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#4 (permalink)

02-19-2005, 03:31 PM

have you downloaded it and tried doing it locally yet? and hold on i'll upload the code in a sec.

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missionsix

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#5 (permalink)

02-19-2005, 04:00 PM

Yeah, I downloaded, but had trouble finding it again..whats wrong with me? But then I uploaded to same dir as the file I was testing, did ./rss.xml in the fopen variable, and it worked. Now im working on parsing the contents, turns out I did it wrong after all.

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borednerd

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#6 (permalink)

02-19-2005, 04:07 PM

sweet. If you still want my source tell me and i'll find it... gotta redownload the file.

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missionsix

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#7 (permalink)

02-19-2005, 04:09 PM

PHP Code:

  // #################### RANDOM TUTORIAL XML SOCKET ###################

class xItem {

  var $xTitle;

  var $xLink;

  var $xDescription;

  var $xImg;

}

// general vars

$sTitle = "";

$sLink = "";

$sDescription = "";

$xImg = "";

$arItems = array();

$itemCount = 0;

// ********* Start User-Defined Vars ************

// rss url goes here

$uFile = 'rss.xml';

// descriptions (true or false) goes here

$bDesc = true;

// ********* 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";

  $itemImgKey = "^RSS^CHANNEL^ITEM^IMAGE";

 
  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;

  }

  elseif ($curTag == $itemImgKey) {

    $arItems[$itemCount]->xImg = $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

srand((float) microtime() * 10000000); 

$rand_keys = array_rand($arItems, 5);

for ($i=0;$i<count($rand_keys);$i++) {

$txItem = $arItems["$rand_keys[$i]"];

$randtut['tutlink'] = $txItem->xLink;

$randtut['xTitle'] = $txItem->xTitle;

$randtut['image'] = $txItem->xImg;

$randtut['Description'] = $txItem->xDescription;

eval("\$home[randtut] .= \"".fetch_template('vbindex_randtut')."\";");

}

theres the code

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missionsix

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#8 (permalink)

02-19-2005, 04:21 PM

Ah yes, see I wasn't doing that. I was using regular expressions that really...really pissed me off later. I was even playing around and got this expression for reading items:

Code:

([- ]{2})([<>]{1})([a-zA-Z]{4})([<>]{1})\n([ ]{1,2})([<>]{1})([a-zA-Z]{5})([<>]{1})([a-zA-Z](.*))([<>/]{1})([ ]{1,2})\n([ ]{2})([<>]{1})([a-zA-Z]{4})([<>]{1})((.*))([>/<]{2})([a-zA-Z]{4})([<>]{1})([ ]{1,2})\n([ ]{1,2})([<>]{1})([a-zA-Z]{11})([<>]{1})((.*))([</>]{2})([a-zA-Z]{11})([<> ]{2})\n(([ ]{2}))(([<>a-zA-Z]{7}))((.*))(([</>a-zA-Z]{7}))(([ ]{1,2}))\n([ a-zA-Z<>]{13})((.*))([</>a-zA-Z]{12})([ ]{1})\n([ ]{2})([a-zA-Z:;<>]{12})((.*))([a-zA-Z:/;<>]{13})([ ]{1})\n([ ]{2})([a-zA-Z:;<>]{9})([0-9]{4})([a-zA-Z:/;<>]{10})([ ]{1})\n([ ]{2})([<>/;:a-zA-Z0-9]{7})

Which I decided against cuase it hurts my eyes...but ill try it your way if I can find the file on your server again

Thanks for the code, Ill update when i get it to work.

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borednerd

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#9 (permalink)

02-19-2005, 04:45 PM

damn thats a length expression. Very thorough though.

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Reading the VDC RSS File In PHP