added a function and some cosmetic changes and fixed typos.

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@29868 c90b9560-bf6c-de11-be94-00142212c4b1

functions/readline.xml

@@ -43,7 +43,7 @@
      <example>
       <title><function>readline</function></title>
       <programlisting role="php">
-//get 10 commands from user
+//get 3 commands from user
 for($i=0; $i < 3; $i++)
 {
         $line = readline("Command: ");

language/constants.xml

@@ -135,7 +135,7 @@
    <para>
 	  The E_* constants are typically used with the
 	  <function>error_reporting</function> function for setting the
-	  error reporting level. See all these constanst at
+	  error reporting level. See all these constants at
 	  <link linkend="features.error-handling">Error handling</link>.
 	 </para>