Get complete XML structure stored on mySQL - php

Question

I have this odd problem, I have to read XML structure stored on a mySQL database, one like this:
<geocercaPoligonal>
<nombreGeocerca>Kennedy</nombreGeocerca>
<longitud>-79.89726930856705</longitud>
<latitud>-2.1599807309506396</latitud>
<longitud>-79.9029341340065</longitud>
<latitud>-2.172760363061884</latitud>
</geocercaPoligonal>
When I get the query on PHP (using PDO Fetch:Assoc) and output the result, it results on this:
' Kennedy -79.89726930856705 -2.1599807309506396 -2.172760363061884 -79.9029341340065 '
All tags are omitted and this leads to error when reading this data, I must get values from specific tags, I get a XML load string
The DB::getRow its a prepare/execute PDO function
$geocerca = DB::getRow('SELECT * FROM GeocercasxUsuario WHERE IdGeocerca = :IdGeocerca', ['IdGeocerca' => $IdGeocerca]);
$infoXML = simplexml_load_string($geocerca['InformacionGeografica']);
//The field from the database with the XML string
It gets this info
SimpleXMLElement::__set_state(array(
'nombreGeocerca' => 'Kennedy',
'longitud' => array(
0 => '-79.89726930856705',
1 => '-2.172760363061884',
),
'latitud' => array(
0 => '-2.1599807309506396',
1 => '-79.9029341340065',
),
))
It doesn't read the XML structure properly, how could I fix this? It's something from PHP or mySQL?

Answer 1

What in particular is not being read properly? The SimpleXML object contains all the data from your XML.
You can convert the object into an array so it is easier to work with as follows:
$json_string = json_encode($infoXML);
$result_array = json_decode($json_string, TRUE);

Answer 2

After trying some things, I switched my select statement to get specific XML data like this:
Instead of
SELECT * FROM GeocercasxUsuario WHERE IdUsuario = n (just for example)
I changed it to
SELECT ExtractValue(InformacionGeografica,'/geocercaPoligonal/latitud') AS Latitud, ExtractValue(InformacionGeografica,'/geocercaPoligonal/longitud') AS Longitud, ...(other fields)... FROM GeocercasxUsuario WHERE IdUsuario = n
This way I get an XML array of the values of each tag, pretty useful if you only want inner values :)