SimpleXML: Add XML attribute values to an array

Question

I want to create an array from the id attributes of the element <b>, however the below code returns all XML.

PHP file:

$xmlfile=simplexml_load_file("test.xml");
$test=$xmlfile->xpath("/a//b[@id]");

XML file(fixed):

<a>
  <b id="1"></b>
  <b id="2"></b>
  <b id="3"></b>
  <b id="4"></b>
  <b id="5"></b>
</a>

Answer 1

Hello_ mate

If I understood you right this code snippet will do the job:

SOLUTION 1

$xmlfile = simplexml_load_file("test.xml");
$items = $xmlfile->xpath("/a//b[@id]");

$result = array();
foreach ($items as $item) {
    $result[] = $item['id']->__toString();
}

echo '<pre>' . print_r($result, true) . '</pre>';
exit;

// Output
Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
)

SOLUTION 2

$sampleHtml = file_get_contents("test.xml");

$result = array();
$dom = new \DOMDocument();
if ($dom->loadHTML($sampleHtml)) {
    $bElements = $dom->getElementsByTagName('b');
    foreach ($bElements as $b) {
        $result[] = $b->getAttribute('id');
    }
} else {
    echo 'Error';
}

echo '<pre>' . print_r($result, true) . '</pre>';
exit;

// Output
Array
(
    [0] => 1
    [1] => 2
    [2] => 3
    [3] => 4
    [4] => 5
)