PHP scrape data from website - php

Question

I am new to programming. So I choose to build a webpage by using Wordpress. But I am trying to gather weather data from other sites, I could not find a fitting plugin for scraping the data, and decided to give it a try and put something together myself.
But with my limited understanding of programming is giving me issues. With a little inspirations from the web I have put this together:
$html = file_get_contents('http://www.frederikshavnhavn.dk/scripts/weatherwindow.php?langid=2'); //get the html returned from the following url
$poke_doc = new DOMDocument();
libxml_use_internal_errors(false); //disable libxml errors
if(!empty($html)){ //if any html is actually returned
$poke_doc->loadHTML($html);
libxml_clear_errors(); //remove errors for yucky html
$poke_xpath = new DOMXPath($poke_doc);
//get all the spans's with an id
$poke_type = $poke_xpath->query("//span[#class='weathstattype']");
$poke_text = $poke_xpath->query("//span[#class='weathstattext']");
foreach($poke_text as $text){
foreach($poke_type as $type){
echo $type->nodeValue;
echo $text->nodeValue . "</br>";
continue 2;
}
break;
}
}
Being that this is all new to me, and I am really trying to get this to work for me, hoping for a better understanding of the code behind the works.
What I am trying to achieve is a formatted list with the data.
1. value $type $text
2. value $type $text
Right now it is giving me a lot of trouble.
when I use the continue 2 it does not change the value $type, but when I just use continue statement it changes $type but not $text. How can I make it change both values each time?
Thanks for your help.

Answer 1

try adding this method:
function get_inner_html( $node ) {
$innerHTML= '';
$children = $node->childNodes;
foreach ($children as $child) {
$innerHTML .= $child->ownerDocument->saveXML( $child );
}
return $innerHTML;
}
then replace the foreach with this:
foreach($poke_text as $text){
//echo $type ->nodeValue . "</n>";
echo get_inner_html($text ).'<br>';
}
foreach($poke_type as $type){
//echo $text ->nodeValue;
echo get_inner_html($type ).'<br>';
}
produces this:
197° (Syd)
5.7 °C Stigende
4.8 m/s Stigende
5.4 m/s Stigende
-6 cm Faldende 1004 hPa Vindretning Lufttemperatur Middel vindhastighed Max vindhastighed Vandstand Lufttryk

Answer 2

Buddy in your code your foreach loops (in last) you use $type as $text and $text as $type.. I run the code and just change the variables as they should be its working fine..
$html = file_get_contents('http://www.frederikshavnhavn.dk/scripts/weatherwindow.php?langid=2'); //get the html returned from the following url
$poke_doc = new DOMDocument();
libxml_use_internal_errors(false); //disable libxml errors
if(!empty($html)){ //if any html is actually returned
$poke_doc->loadHTML($html);
libxml_clear_errors(); //remove errors for yucky html
$poke_xpath = new DOMXPath($poke_doc);
//get all the spans's with an id
$poke_type = $poke_xpath->query("//span[#class='weathstattype']");
$poke_text = $poke_xpath->query("//span[#class='weathstattext']");
foreach($poke_text as $text){
echo $text->nodeValue;
}
foreach($poke_type as $type){
echo $type->nodeValue;
}
}
And this the out that I got from your code (by changing the variables in loop)
196° (Syd) 5.6 °C 4.1 m/s 5 m/s -6 cm 1004 hPa Vindretning Lufttemperatur Middel vindhastighed Max vindhastighed Vandstand Lufttryk
Now You have your data I think you can manage how to sort them out...