PHP Tutorial - PHP attributes() Function






The attributes() function returns attributes and values within an XML tag.

Syntax

PHP attributes() Function has the following syntax.

attributes(ns,is_prefix);

Parameter

ParameterIs RequiredDescription
nsOptional.A namespace for the retrieved attributes
is_prefixOptional.A Boolean value. TRUE if ns is a prefix. FALSE if ns is a URI. Default is FALSE

Return

Returns a SimpleXMLElement object on success.

Example

Return attributes and values within the XML body element:


<?php/*w w  w  . j a va  2  s. c  o m*/
$note=<<<XML
<book>
    <name date="2013-01-01" type="public">PHP</name>
    <name date="2013-01-01" type="private">Java</name>
</book>
XML;


$xml=simplexml_load_string($note);
foreach($xml->body[0]->attributes() as $a => $b){
   echo $a,'="',$b,"\"\n";
}
?>




Example 2

The following code shows how to access attribute and element value.


<?php/* w ww.j a va2s .co m*/
$xml = simplexml_load_file('test.xml');
?>
<!DOCTYPE html>
<html>
<body>
<?php
foreach ($xml->book as $book) {
  echo '<h2>' . $book->title . '</h2>';
  
  $num_authors = count($book->author);
  echo '<p class="author">';
  foreach ($book->author as $author) {
    echo $author;
  }
  for ($i = 0; $i < $num_authors; $i++) {
    echo $book->author[$i];
    if ($num_authors == 1) {
      break;
    } elseif ($i < ($num_authors - 2)) {
      echo ', ';
    } elseif ($i == ($num_authors - 2)) {
      echo ' &amp; ';
    }
  }
  echo '</p>';
                
  echo '<p class="publisher">' . $book->publisher . '</p>';
  echo '<p class="publisher">ISBN: ' . $book['isbn13'] . '</p>';
                  
  echo '<p>' . $book->description . '</p>';
}
?>
</body>
</html>

The following code is for test.xml. 

<?xml version='1.0' encoding='utf-8'?>
<inventory>
  <book isbn13='1'>
    <title>PHP</title>
  <author>Jack</author>
  <publisher>Publisher 1</publisher>
  <description>PHP Book</description>
  </book>
  <book isbn13='2'>
    <title>XML</title>
  <author>Jane</author>
  <publisher>Publisher 2</publisher>
  <description>XML Book</description>
  </book>
</inventory>

The code above generates the following result.