News Feed no brainer!

Adam · 20-03-2007 03:26PM #1

Hi guys,

I've tried and tried again to implement this code, which I know is just example code, but should work right? The example feed is live. And I've gotten error after error after error, all relating to xml parsing I believe. At the moment its:

Warning: xpath_eval() URL="http://localhost/goa/function.xpath-eval"]function.xpath-eval[/URL: Invalid expression in C:\Program Files\xampp\htdocs\goa\parser.php on line 30

Why might that be? I've read up a bit, and found that this kind of functionality is dodgy stuff, solutions seem to be either non-existant, or involving extensions which I'm pretty sure I've installed correctly, and mentions of recompiling php.ini. Now I'm not exactly a n00b, but right now I'm shaggin lost! So please, somebody, put me out of my misery!

Adam

Evil Phil · 20-03-2007 03:56PM

Might be an idea to post the code for parser.php. An example of the XML that's being used when you get the error would also be valuable.

Adam · 20-03-2007 04:00PM

parser.php simply contains the example code I linked to in my post, and the xml being used is within that sample code also.

daymobrew · 20-03-2007 04:15PM

Does your PHP installation have php_domxml extension? (mentioned at the top of the page linked to).

It would be worthwhile posting your code, especially to see line 30. Maybe there is a typo somewhere.

You could also try simplify the thing e.g. start with a static XML file.
Are you using PHP5? A user comment for xpath-new-context mentions issues wrt PHP5.

Evil Phil · 20-03-2007 04:31PM

Mirror wrote:

parser.php simply contains the example code I linked to in my post, and the xml being used is within that sample code also.

:rolleyes: Good luck getting it sorted then.

Adam · 20-03-2007 04:44PM

Here's the code in parser.php:
[php]<?php echo "<?xml version=\"1.0\" encoding=\"iso-8859-1\"?".">"; ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><body><div id="pagecell1">
<?php

// creating connection for MySql by passing Server,Username,Password
$connection = mysql_connect("localhost","root","");
mysql_select_db("test", $connection);
//Loading xml from url stream
$dataFile = fopen ('http://feeds.directnews.co.uk/?c21c0905-b9ca-43ee-87be-7e4308406da6','r')
or die("Error Loading XMl");
if ( $dataFile )
{
while (!feof($dataFile))
{
$buffer .= fgets($dataFile, 4096);
}
fclose($dataFile);
}
else
{
die( "fopen failed for $filename" ) ;
}
// Loading xml into a DOM object.
$dom = domxml_open_mem($buffer);
$xpc = xpath_new_context($dom);

// Selecting nodes matching node "Article" using xpath_eval command and passing it the xpath context
$nodes = xpath_eval($xpc, "//Article/");
// Just for debugging purposes -> print "Article found: ".count($nodes->nodeset)."<br/>";
// For each nodes in the collection we loop through each node and retrive and save the data.
foreach ($nodes->nodeset as $node){
$id = $node->get_attribute("ID");
// Just for debugging purposes -> print "ID: ".$id."<br/>";
foreach ($node->child_nodes() as $child) {
if ($child->node_name() == "Heading") $heading = $child->get_content();
if ($child->node_name() == "Contents") $content = $child->get_content();
if ($child->node_name() == "Date") $date = $child->get_content();
}
//replacing ' with '' for adding data to sql and stripping data and reformatting it for sql
$content = str_replace("'", "''", $content);
$heading = str_replace("'", "''", $heading);
list($day, $month, $year) = split('[/]',$date);
// Just for debugging purposes -> echo "Day : $day, Month: $month, Year: $year";
// adding and updating the data in database, first checking if the id exist in database if it does then update the data or add an new item.
$resultA = mysql_query("SELECT * FROM feeddata WHERE ID = '$id'");
if(!$resultA){
echo 'Could not run query: ' . mysql_error();
exit;
}
$row = mysql_num_rows($resultA);
if ($row == 0){
$insert = "INSERT INTO feeddata ( ID, Content, Heading, Date) VALUES ('$id', '$content','$heading','$year-$month-$day')";
// Just for debugging purposes -> echo $insert;
$resultB = mysql_query ($insert , $connection);
if (mysql_errno() == 1062) {
echo 'could not run : '.mysql_errno();
echo 'Could not run query: ' . mysql_error();
exit;
}
}
else{
$result = mysql_query ("UPDATE feeddata SET Content='$content', Heading='$heading', Date='$date' where ID='$id'",$connection);
if (!$result) {
echo 'could not run : '.mysql_errno();
echo 'Could not run query: ' . mysql_error();
exit;
}
}
}
// Closing the connection after the all the data from the feed has been added.
mysql_close($connection);
?>

</div>
</body>[/php]

And a screenshot of my phpinfo regarding dom. I'm on an xampp installation php version 5.2.1, when I use php switch to version 4.4.5 I get this error:

Fatal error: Call to undefined function: domxml_open_mem() in C:\Program Files\xampp\htdocs\goa\parser.php on line 26

and I couldn't for the life of me suss out the dom_xml for php4...

Also, I would start at the start and work down, but I have zero experience with php+xml!

Thanks for the responses so far

Adam · 23-03-2007 02:11PM

Em, bump?

Can anyone even look at the the feed and show me how to access it on the most baic level? I'm sure I can work up from there.

News Feed no brainer!

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