如何将xml文件附加到php变量

Question

i have been created an xml file and named it 'input.xml'. When i'm trying to add a file (attach to string) in php, i get 500 browser error.

---

This is how i importing my xml to variable (working way):

 $xmlstr = <<<XML
<?xml version='1.0' standalone='yes'?>
<movies>
 <movie>
  <title>Movie 1</title>
 </movie>

  <movie>
  <title>Movie 2</title>
 </movie>

 <categories>
  <category>
    <name>Example category</name>
  </category>
 </categories>
</movies>
XML;

---

This is how i want to import my xml (from input.xml file) (not working way):

 $xmlstr = simplexml_load_file("input.xml");

---

This is how my php code looks like:

$movies = new SimpleXMLElement($xmlstr);

foreach ($movies->movie as $mov) {
   echo "We found a movie!<br>";
}

foreach ($movies->categories as $cat) {
    echo "We found a category!<br>";
}

---

And this is my input.xml file content:

<?xml version='1.0' standalone='yes'?>
<movies>
 <movie>
  <title>Movie 1</title>
 </movie>

  <movie>
  <title>Movie 2</title>
 </movie>

 <categories>
  <category>
    <name>Example category</name>
  </category>
 </categories>
</movies>

Answer 1

simplexml_load_file already returns a SimpleXMLElement for you. So, there's no need to use

$movies = new SimpleXMLElement($xmlstr);

Just:

$movies = simplexml_load_file("input.xml");

foreach ($movies->movie as $mov) {
   echo "We found a movie!<br>";
}

foreach ($movies->categories as $cat) {
    echo "We found a category!<br>";
}