diff --git a/language/types/integer.xml b/language/types/integer.xml
index 1a3416fe9a..8592e14b8e 100644
--- a/language/types/integer.xml
+++ b/language/types/integer.xml
@@ -197,6 +197,12 @@ var_dump(round(25/7));  // float(4)
    <type>integer</type> with the <function>intval</function> function.
   </simpara>
 
+  <simpara>
+   If a <type>resource</type> is converted to an <type>integer</type>, then
+   the result will be the unique resource number assigned to the
+   <type>resource</type> by PHP at runtime.
+  </simpara>
+
   <simpara>
    See also <link linkend="language.types.type-juggling">Type Juggling</link>.
   </simpara>
diff --git a/language/types/string.xml b/language/types/string.xml
index b303f64949..5a2855cc70 100644
--- a/language/types/string.xml
+++ b/language/types/string.xml
@@ -960,11 +960,13 @@ bool(false)
 
   <para>
    <type>Resource</type>s are always converted to <type>string</type>s with the
-   structure <literal>"Resource id #1"</literal>, where <literal>1</literal> is
-   the unique number assigned to the <type>resource</type> by PHP at runtime. Do
-   not rely upon this structure; it is subject to change. To get a
-   <type>resource</type>'s type, use the
-   <function>get_resource_type</function> function.
+   structure <literal>"Resource id #1"</literal>, where <literal>1</literal>
+   is the resource number assigned to the <type>resource</type> by PHP at
+   runtime. While the exact structure of this string should not be relied on
+   and is subject to change, it will always be unique for a given resource
+   within the lifetime of a script being executed (ie a Web request or CLI
+   process) and won't be reused. To get a <type>resource</type>'s type, use
+   the <function>get_resource_type</function> function.
   </para>
 
   <para>