diff --git a/language/variables.xml b/language/variables.xml
index 9a1eb2cdc1..494edd819e 100644
--- a/language/variables.xml
+++ b/language/variables.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.84 $ -->
+<!-- $Revision: 1.85 $ -->
  <chapter id="language.variables">
   <title>Variables</title>
   
@@ -36,8 +36,8 @@
      <programlisting role="php"> 
 <![CDATA[
 <?php
-$var = "Bob";
-$Var = "Joe";
+$var = 'Bob';
+$Var = 'Joe';
 echo "$var, $Var";      // outputs "Bob, Joe"
 
 $4site = 'not yet';     // invalid; starts with a number
@@ -335,7 +335,7 @@ $bar = &test();    // Invalid.
 <![CDATA[
 <?php
 $a = 1;
-include "b.inc";
+include 'b.inc';
 ?>
 ]]>
     </programlisting>
@@ -431,7 +431,7 @@ $b = 2;
 
 function Sum()
 {
-    $GLOBALS["b"] = $GLOBALS["a"] + $GLOBALS["b"];
+    $GLOBALS['b'] = $GLOBALS['a'] + $GLOBALS['b'];
 } 
 
 Sum();
@@ -467,7 +467,8 @@ function test_global()
     
     // Superglobals are available in any scope and do 
     // not require 'global'. Superglobals are available 
-    // as of PHP 4.1.0
+    // as of PHP 4.1.0, and HTTP_POST_VARS is now
+    // deemed deprecated.
     echo $_POST['name'];
 }
 ?>
@@ -652,7 +653,7 @@ object(stdClass)(0) {
 function &get_instance_ref() {
     static $obj;
 
-    echo "Static object: ";
+    echo 'Static object: ';
     var_dump($obj);
     if (!isset($obj)) {
         // Assign a reference to the static variable
@@ -665,7 +666,7 @@ function &get_instance_ref() {
 function &get_instance_noref() {
     static $obj;
 
-    echo "Static object: ";
+    echo 'Static object: ';
     var_dump($obj);
     if (!isset($obj)) {
         // Assign the object to the static variable
@@ -721,7 +722,7 @@ Static object: object(stdClass)(1) {
     <programlisting role="php">
 <![CDATA[
 <?php
-$a = "hello";
+$a = 'hello';
 ?>
 ]]>
     </programlisting>
@@ -738,7 +739,7 @@ $a = "hello";
     <programlisting role="php">
 <![CDATA[
 <?php
-$$a = "world";
+$$a = 'world';
 ?>
 ]]>
     </programlisting>
@@ -1004,8 +1005,8 @@ if (isset($_POST['action']) && $_POST['action'] == 'submitted') {
      <programlisting role="php">
 <![CDATA[
 <?php
-  setcookie("MyCookie[foo]", "Testing 1", time()+3600);
-  setcookie("MyCookie[bar]", "Testing 2", time()+3600);
+  setcookie("MyCookie[foo]", 'Testing 1', time()+3600);
+  setcookie("MyCookie[bar]", 'Testing 2', time()+3600);
 ?>
 ]]>
      </programlisting>
@@ -1035,7 +1036,7 @@ if (isset($_COOKIE['count'])) {
 } else {
     $count = 1;
 }
-setcookie("count", $count, time()+3600);
+setcookie('count', $count, time()+3600);
 setcookie("Cart[$count]", $item, time()+3600);
 ?>
 ]]>