解析php中XML URL的单行

Question

I have a xml URL where I want to parse a single line. But my script cant even read the XML url. I looked at the answer given at PHP parsing XML from URL but I still get 3 errors at the file_get_contents() command. There is no error with some other sites.

my script is:

    <?php
    header('Content-type: text/html; charset=utf-8');

    $url = "https://geodata.nationaalgeoregister.nl/geocoder/Geocoder?zoekterm=1056SW+11";
    $data = file_get_contents($url);
    $data = iconv(mb_detect_encoding($data, mb_detect_order(), true), "UTF-8", $data);
    $xml = simplexml_load_string($data);

    print_r($xml);      
?>

I try to print the whole XML in this case, but eventually i want it to only print line 5 of the xml, the coordinates. How can I overcome the errors, and how can I make sure it only prints one line in this XML?

Thanks in advance!

Answer 1

Maybe PHP has a problem with the SSL connection (I have PHP 7 and everything works fine).

On one hand you can try to request the URL without SSL:

<?php
    header('Content-type: text/html; charset=utf-8');

    $url = "http://geodata.nationaalgeoregister.nl/geocoder/Geocoder?zoekterm=1056SW+11";
    $data = file_get_contents($url);
    $data = iconv(mb_detect_encoding($data, mb_detect_order(), true), "UTF-8", $data);
    $xml = simplexml_load_string($data);

    print_r($xml);      
?>

Or you can use cURL for the connection (prefered method):

 $url = "https://geodata.nationaalgeoregister.nl/geocoder/Geocoder?zoekterm=1056SW+11";
 $c = curl_init();
 curl_setopt($c, CURLOPT_URL, $url);
 curl_setopt($c, CURLOPT_RETURNTRANSFER, true);
 curl_setopt($c, CURLOPT_TIMEOUT, 10);
 $data = curl_exec($c);
 curl_close($c);

 print_r( $data );

And if you have the XML string, you can get the coordinates this way:

$xml = simplexml_load_string($data);

$coord = $xml->xpath('/xls:GeocodeResponse/xls:GeocodeResponseList/xls:GeocodedAddress/gml:Point/gml:pos');    
echo $coord[0][0];