php 5- simple xml question

[aep]

Okay when I use simple xml I use the following code. Being new at this I don't know how to manipulate this to get the data I want. Let’s say that the xml feed has four <description> sections. How can I change the code below to only get the <description> I want... (<description #2)?

<?
$xml = simplexml_load_file('http://www.quickweather.ca/cgi-bin/xml.cgi?key=6b8bfb1b0c5caea7c922f6cdea8acdb1&city=YYZ&tz=EST');

foreach ($xml->channel->item as $item){
echo $item->description."<br>";
echo $item->observations."<br>";
echo $item->temperature."<br>";
}

?>

[rincewind456]

That code won't work with that xml page
this <?php
$xml = simplexml_load_file('http://www.quickweather.ca/cgi-bin/xml.cgi?key=6b8bfb1b0c5caea7c922f6cdea8acdb1&city=YYZ&tz=EST');

foreach ($xml->currentconditions as $item){
echo $item->cityname."<br>";
echo $item->observations."<br>";
echo $item->temperature."<br>";
}

?> will output
Toronto, ON
Fog
-0.2
so you should be able to work out that the linesecho $item->cityname"<br>"; equate to the lines<cityname>Toronto, ON</cityname> in the xml feed.

[aep]

Thanks for that code, which helps me out a lot. :) I have another question. If I wanted to use the following link: (http://www.nhc.noaa.gov/index-at.xml) to get only the first <description>, and the third title...how would the code change to do that?

[rincewind456]

If I've counted right :D
<?php
$xml = simplexml_load_file('http://www.nhc.noaa.gov/index-at.xml');

echo $xml->channel->title."<br>";
echo $xml->channel->item->title."<br>";

?>

[aep]

How you learnt this stuff, you're really good at it...I know this may be a long shot, but is there a way that a php code could be built to get the data off of this webpage (http://twister.sbs.ohio-state.edu/text/canada/WWCN12.CWNT). There is no xml, but since its all text I was wondering if there is an easy php code to get the data?

[rincewind456]

Like so$html = file_get_contents('http://twister.sbs.ohio-state.edu/text/canada/WWCN12.CWNT');
echo "<pre>".$html."</pre>";