如何遍历从xml加载到php的数组

Question

I have an XML file as follows:

<Main>
<SubMain>
  <First>10570</First>
  <Time>07:33:51</Time>
  <Result>500</Result>
  <Taken>8:14</Taken>
  <Results>
    <int>100</int>
    <int>100</int>
    <int>85</int>
    <int>100</int>
    <int>100</int>
    <int>100</int>
    <int>100</int>
  </Results>
</SubMain>
</Main>

That I am loading from a file into PHP using simplexml_load_file:

   $xml=simplexml_load_file("note.xml") or die("Error: Cannot create object");
    foreach($xml->children() as $child)
   {
        echo $child->getName() . ": " . $child->First . $child->Time . $child->Taken ."<br>";

    }

When I load in the Results row I am not getting any values returned, how do I step into this sub-array? Sorry if it's a daft question but has had me stumped today!

Edit: Removed the typo since it does not exist in the code, also to be clear the First, Time, Result etc are returning the expected values, it is the sub array (Results) I can not seem to pull data from.

Answer 1

All values returned when using SimpleXML are SimpleXMLElement objects, which can be cast to native types (e.g. var_dump($xml->SubMain->First);). It also implements Traversable so it can be used in foreach loops.

To get the <int> values, you will need to loop over the children of <Result>:

foreach ($xml->SubMain->Results->children() as $result) {
    // $result is a SimpleXMLElement object, needs casting
    var_dump(intval($result));
}

You can also cast directly to an array, but note that you will have an array of strings:

$ints = (array) $xml->SubMain->Results->int;
var_dump($ints); // actually strings

So you could do something like this:

$ints = array_map('intval', (array) $xml->SubMain->Results->int);
var_dump($ints);