Fix errors and add "Comparing Elements and Attributes with Text" section.

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@153313 c90b9560-bf6c-de11-be94-00142212c4b1

reference/simplexml/reference.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.8 $ -->
+<!-- $Revision: 1.9 $ -->
  <reference id="ref.simplexml">
   <title>SimpleXML functions</title>
   <titleabbrev>SimpleXML</titleabbrev>
@@ -51,7 +51,7 @@ $xmlstr = <<<XML
    </character>
    <character>
     <name>Mr. Coder</name>
-    <actor>El Act&oacute;r</actor>
+    <actor>El Act&#211;r</actor>
    </character>
   </characters>
   <plot>
@@ -128,7 +128,7 @@ $xml = simplexml_load_string($xmlstr);
 /* Access the <rating> nodes of the first movie.
  * Output the rating scale, too. */
 foreach ($xml->movie[0]->rating as $rating) {
-    switch($rating['type']) { // Get attributes as element indices
+    switch((string) $rating['type']) { // Get attributes as element indices
     case 'thumbs':
         echo $rating, ' thumbs up';
         break;
@@ -138,6 +138,28 @@ foreach ($xml->movie[0]->rating as $rating) {
     }
 }
 ?>
+]]>
+      </programlisting>
+     </example>
+    </para>
+    <para>
+     <example>
+      <title>Comparing Elements and Attributes with Text</title>
+      <simpara>
+       To compare an element with a string or pass it into a 
+       function, you must cast it to a string using <literal>(string)</literal>. 
+       Otherwise, PHP treats the element as an object.
+      </simpara>
+      <programlisting role="php"><![CDATA[
+<?php     
+include 'example.php';
+
+$xml = simplexml_load_string($xmlstr);
+
+if ((string) $xml->movie->title == 'PHP: Behind the Parser') {
+    print 'My favorite movie.';
+}
+?>
 ]]>
       </programlisting>
      </example>