Noted that the values of static class variables and class constants

may be accessed as the names of variables in the local scope, but that
single-curly-brace syntax will not work with function or method calls
or static class variables or class constants.
Addresses bug #47369.


git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@288077 c90b9560-bf6c-de11-be94-00142212c4b1

language/types/string.xml

@@ -649,10 +649,41 @@ echo "I'd like to have another {${ strrev('reeb') }}, hips";
     
     <note>
      <para>
-      Functions and method calls inside <literal>{$}</literal> work since PHP 5.
+      Functions, method calls, static class variables, and class
+      constants inside <literal>{$}</literal> work since PHP
+      5. However, the value accessed will be interpreted as the name
+      of a variable in the scope in which the string is defined. Using
+      single curly braces (<literal>{}</literal>) will not work for
+      accessing the return values of functions or methods or the
+      values of class constants or static class variables.
      </para>
     </note>
 
+    <informalexample>
+     <programlisting role="php">
+<![CDATA[
+<?php
+// Show all errors.
+error_reporting(E_ALL);
+
+class beers {
+    const softdrink = 'rootbeer';
+    public static $ale = 'ipa';
+}
+
+$rootbeer = 'A & W';
+$ipa = 'Alexander Keith\'s';
+
+// This works; outputs: I'd like an A & W
+echo "I'd like an {${beers::softdrink}}\n";
+
+// This works too; outputs: I'd like an Alexander Keith's
+echo "I'd like an {${beers::$ale}}\n";
+?>
+]]>
+     </programlisting>
+    </informalexample>
+
    </sect4>
   </sect3>