diff --git a/reference/spl/arrayiterator/asort.xml b/reference/spl/arrayiterator/asort.xml
index eceea90b4c..dfb99f6533 100644
--- a/reference/spl/arrayiterator/asort.xml
+++ b/reference/spl/arrayiterator/asort.xml
@@ -3,7 +3,7 @@
 <refentry xml:id="arrayiterator.asort" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
  <refnamediv>
   <refname>ArrayIterator::asort</refname>
-  <refpurpose>Sort array by values</refpurpose>
+  <refpurpose>Sort entries by values</refpurpose>
  </refnamediv>
 
  <refsect1 role="description">
@@ -13,22 +13,22 @@
    <methodparam choice="opt"><type>int</type><parameter>flags</parameter><initializer><constant>SORT_REGULAR</constant></initializer></methodparam>
   </methodsynopsis>
   <para>
-   Sorts an array by values.
+   Sorts entries by their values.
   </para>
-
-  &warn.undocumented.func;
-
+  &note.sort-unstable;
  </refsect1>
 
  <refsect1 role="parameters">
   &reftitle.parameters;
-  &no.function.parameters;
+  <variablelist>
+   &sort.flags.parameter;
+  </variablelist>
  </refsect1>
 
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
-   Always returns &true;.
+   &return.true.always;
   </para>
  </refsect1>
 
@@ -39,6 +39,9 @@
     <member><methodname>ArrayIterator::ksort</methodname></member>
     <member><methodname>ArrayIterator::natcasesort</methodname></member>
     <member><methodname>ArrayIterator::natsort</methodname></member>
+    <member><methodname>ArrayIterator::uasort</methodname></member>
+    <member><methodname>ArrayIterator::uksort</methodname></member>
+    <member><function>asort</function></member>
    </simplelist>
   </para>
  </refsect1>
diff --git a/reference/spl/arrayiterator/ksort.xml b/reference/spl/arrayiterator/ksort.xml
index a511591177..efc87a32d9 100644
--- a/reference/spl/arrayiterator/ksort.xml
+++ b/reference/spl/arrayiterator/ksort.xml
@@ -3,7 +3,7 @@
 <refentry xml:id="arrayiterator.ksort" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
  <refnamediv>
   <refname>ArrayIterator::ksort</refname>
-  <refpurpose>Sort array by keys</refpurpose>
+  <refpurpose>Sort entries by keys</refpurpose>
  </refnamediv>
 
  <refsect1 role="description">
@@ -13,22 +13,22 @@
    <methodparam choice="opt"><type>int</type><parameter>flags</parameter><initializer><constant>SORT_REGULAR</constant></initializer></methodparam>
   </methodsynopsis>
   <para>
-   Sorts an array by the keys.
+   Sorts entries by their keys.
   </para>
-
-  &warn.undocumented.func;
-
+  &note.sort-unstable;
  </refsect1>
 
  <refsect1 role="parameters">
   &reftitle.parameters;
-  &no.function.parameters;
+  <variablelist>
+   &sort.flags.parameter;
+  </variablelist>
  </refsect1>
 
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
-   Always returns &true;.
+   &return.true.always;
   </para>
  </refsect1>
 
@@ -39,6 +39,9 @@
     <member><methodname>ArrayIterator::asort</methodname></member>
     <member><methodname>ArrayIterator::natcasesort</methodname></member>
     <member><methodname>ArrayIterator::natsort</methodname></member>
+    <member><methodname>ArrayIterator::uasort</methodname></member>
+    <member><methodname>ArrayIterator::uksort</methodname></member>
+    <member><function>ksort</function></member>
    </simplelist>
   </para>
  </refsect1>
diff --git a/reference/spl/arrayiterator/natcasesort.xml b/reference/spl/arrayiterator/natcasesort.xml
index 89db0c54b1..edc90c6759 100644
--- a/reference/spl/arrayiterator/natcasesort.xml
+++ b/reference/spl/arrayiterator/natcasesort.xml
@@ -3,7 +3,7 @@
 <refentry xml:id="arrayiterator.natcasesort" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
  <refnamediv>
   <refname>ArrayIterator::natcasesort</refname>
-  <refpurpose>Sort an array naturally, case insensitive</refpurpose>
+  <refpurpose>Sort entries naturally, case insensitive</refpurpose>
  </refnamediv>
 
  <refsect1 role="description">
@@ -15,9 +15,7 @@
   <para>
    Sort the entries by values using a case insensitive "natural order" algorithm.
   </para>
-
-  &warn.undocumented.func;
-
+  &note.sort-unstable;
  </refsect1>
 
  <refsect1 role="parameters">
@@ -28,7 +26,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
-   &return.void;
+   &return.true.always;
   </para>
  </refsect1>
 
@@ -39,6 +37,8 @@
     <member><methodname>ArrayIterator::asort</methodname></member>
     <member><methodname>ArrayIterator::ksort</methodname></member>
     <member><methodname>ArrayIterator::natsort</methodname></member>
+    <member><methodname>ArrayIterator::uasort</methodname></member>
+    <member><methodname>ArrayIterator::uksort</methodname></member>
     <member><function>natcasesort</function></member>
    </simplelist>
   </para>
diff --git a/reference/spl/arrayiterator/natsort.xml b/reference/spl/arrayiterator/natsort.xml
index 57e4b62227..cbfc6e315a 100644
--- a/reference/spl/arrayiterator/natsort.xml
+++ b/reference/spl/arrayiterator/natsort.xml
@@ -3,7 +3,7 @@
 <refentry xml:id="arrayiterator.natsort" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
  <refnamediv>
   <refname>ArrayIterator::natsort</refname>
-  <refpurpose>Sort an array naturally</refpurpose>
+  <refpurpose>Sort entries naturally</refpurpose>
  </refnamediv>
 
  <refsect1 role="description">
@@ -13,11 +13,9 @@
    <void/>
   </methodsynopsis>
   <para>
-   Sort the entries by values using "natural order" algorithm.
+   Sort the entries by values using a "natural order" algorithm.
   </para>
-
-  &warn.undocumented.func;
-
+  &note.sort-unstable;
  </refsect1>
 
  <refsect1 role="parameters">
@@ -28,7 +26,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
-   &return.void;
+   &return.true.always;
   </para>
  </refsect1>
 
@@ -38,7 +36,9 @@
    <simplelist>
     <member><methodname>ArrayIterator::asort</methodname></member>
     <member><methodname>ArrayIterator::ksort</methodname></member>
-    <member><methodname>ArrayIterator::natcasesort</methodname></member>
+    <member><methodname>ArrayIterator::natsort</methodname></member>
+    <member><methodname>ArrayIterator::uasort</methodname></member>
+    <member><methodname>ArrayIterator::uksort</methodname></member>
     <member><function>natsort</function></member>
    </simplelist>
   </para>
diff --git a/reference/spl/arrayiterator/uasort.xml b/reference/spl/arrayiterator/uasort.xml
index a1f2ed2bcb..d7bf703a12 100644
--- a/reference/spl/arrayiterator/uasort.xml
+++ b/reference/spl/arrayiterator/uasort.xml
@@ -40,7 +40,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
-   &return.void;
+   &return.true.always;
   </para>
  </refsect1>
 
@@ -49,8 +49,11 @@
   <para>
    <simplelist>
     <member><methodname>ArrayIterator::asort</methodname></member>
+    <member><methodname>ArrayIterator::ksort</methodname></member>
+    <member><methodname>ArrayIterator::natcasesort</methodname></member>
+    <member><methodname>ArrayIterator::natsort</methodname></member>
     <member><methodname>ArrayIterator::uksort</methodname></member>
-    <member><function>usort</function></member>
+    <member><function>uasort</function></member>
    </simplelist>
   </para>
  </refsect1>
diff --git a/reference/spl/arrayiterator/uksort.xml b/reference/spl/arrayiterator/uksort.xml
index a368916cb2..decd17d8b1 100644
--- a/reference/spl/arrayiterator/uksort.xml
+++ b/reference/spl/arrayiterator/uksort.xml
@@ -39,7 +39,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
-   &return.void;
+   &return.true.always;
   </para>
  </refsect1>
 
@@ -47,8 +47,11 @@
   &reftitle.seealso;
   <para>
    <simplelist>
+    <member><methodname>ArrayIterator::asort</methodname></member>
     <member><methodname>ArrayIterator::ksort</methodname></member>
-    <member><methodname>ArrayIterator::uasort</methodname></member>
+    <member><methodname>ArrayIterator::natcasesort</methodname></member>
+    <member><methodname>ArrayIterator::natsort</methodname></member>
+    <member><methodname>ArrayIterator::uksort</methodname></member>
     <member><function>uksort</function></member>
    </simplelist>
   </para>
diff --git a/reference/spl/arrayobject/asort.xml b/reference/spl/arrayobject/asort.xml
index dd0780e154..d489217979 100644
--- a/reference/spl/arrayobject/asort.xml
+++ b/reference/spl/arrayobject/asort.xml
@@ -12,11 +12,15 @@
    <methodparam choice="opt"><type>int</type><parameter>flags</parameter><initializer><constant>SORT_REGULAR</constant></initializer></methodparam>
   </methodsynopsis>
   <para>
-   Sorts the entries such that the keys maintain
-   their correlation with the entries they are associated
-   with. This is used mainly when sorting associative arrays where
-   the actual element order is significant.
+   Sorts the entries in ascending order,
+   such that its keys maintain their correlation with the values they
+   are associated with.
   </para>
+  <para>
+   This is used mainly when sorting associative arrays where the actual
+   element order is significant.
+  </para>
+  &note.sort-unstable;
  </refsect1>
 
  <refsect1 role="parameters">
@@ -29,7 +33,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
-   &return.void;
+   &return.true.always;
   </para>
  </refsect1>
 
@@ -77,6 +81,7 @@ a = orange
     <member><methodname>ArrayObject::natcasesort</methodname></member>
     <member><methodname>ArrayObject::uasort</methodname></member>
     <member><methodname>ArrayObject::uksort</methodname></member>
+    <member><function>asort</function></member>
    </simplelist>
   </para>
  </refsect1>
diff --git a/reference/spl/arrayobject/ksort.xml b/reference/spl/arrayobject/ksort.xml
index 26f061e896..0cc5fbea92 100644
--- a/reference/spl/arrayobject/ksort.xml
+++ b/reference/spl/arrayobject/ksort.xml
@@ -15,6 +15,7 @@
    Sorts the entries by key, maintaining key to entry correlations. This is
    useful mainly for associative arrays.
   </para>
+  &note.sort-unstable;
  </refsect1>
 
  <refsect1 role="parameters">
@@ -27,7 +28,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
-   &return.void;
+   &return.true.always;
   </para>
  </refsect1>
 
@@ -71,6 +72,7 @@ d = lemon
     <member><methodname>ArrayObject::natcasesort</methodname></member>
     <member><methodname>ArrayObject::uasort</methodname></member>
     <member><methodname>ArrayObject::uksort</methodname></member>
+    <member><function>ksort</function></member>
    </simplelist>
   </para>
  </refsect1>
diff --git a/reference/spl/arrayobject/natcasesort.xml b/reference/spl/arrayobject/natcasesort.xml
index b19f2b2535..f405bb0bc7 100644
--- a/reference/spl/arrayobject/natcasesort.xml
+++ b/reference/spl/arrayobject/natcasesort.xml
@@ -20,6 +20,7 @@
    alphanumeric strings in the way a human being would while maintaining
    key/value associations.  This is described as a "natural ordering".
   </para>
+  &note.sort-unstable;
  </refsect1>
 
  <refsect1 role="parameters">
@@ -100,6 +101,7 @@ ArrayObject Object
     <member><methodname>ArrayObject::natsort</methodname></member>
     <member><methodname>ArrayObject::uasort</methodname></member>
     <member><methodname>ArrayObject::uksort</methodname></member>
+    <member><function>natcasesort</function></member>
    </simplelist>
   </para>
  </refsect1>
diff --git a/reference/spl/arrayobject/natsort.xml b/reference/spl/arrayobject/natsort.xml
index 88143bc8db..c2479f5dc0 100644
--- a/reference/spl/arrayobject/natsort.xml
+++ b/reference/spl/arrayobject/natsort.xml
@@ -19,6 +19,7 @@
    (used in <link linkend="arrayobject.asort">ArrayObject::asort</link>) method
    can be seen in the example below.
   </para>
+  &note.sort-unstable;
  </refsect1>
 
  <refsect1 role="parameters">
@@ -95,6 +96,7 @@ ArrayObject Object
     <member><methodname>ArrayObject::natcasesort</methodname></member>
     <member><methodname>ArrayObject::uasort</methodname></member>
     <member><methodname>ArrayObject::uksort</methodname></member>
+    <member><function>natsort</function></member>
    </simplelist>
   </para>
  </refsect1>
diff --git a/reference/spl/arrayobject/uasort.xml b/reference/spl/arrayobject/uasort.xml
index 1da9e57596..ef42fa6a01 100644
--- a/reference/spl/arrayobject/uasort.xml
+++ b/reference/spl/arrayobject/uasort.xml
@@ -20,6 +20,7 @@
    This is used mainly when sorting associative arrays where the actual
    element order is significant.
   </para>
+  &note.sort-unstable;
  </refsect1>
 
  <refsect1 role="parameters">
@@ -30,19 +31,22 @@
      <term><parameter>callback</parameter></term>
      <listitem>
       <para>
-       Function <parameter>callback</parameter> should accept two
-       parameters which will be filled by pairs of entries.
-       The comparison function must return an integer less than, equal
-       to, or greater than zero if the first argument is considered to
-       be respectively less than, equal to, or greater than the
-       second.
+       &return.callbacksort;
       </para>
+      &callback.cmp;
      </listitem>
     </varlistentry>
    </variablelist>
   </para>
  </refsect1>
 
+ <refsect1 role="returnvalues">
+  &reftitle.returnvalues;
+  <para>
+   &return.true.always;
+  </para>
+ </refsect1>
+
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
@@ -117,6 +121,7 @@ Array
     <member><methodname>ArrayObject::natsort</methodname></member>
     <member><methodname>ArrayObject::natcasesort</methodname></member>
     <member><methodname>ArrayObject::uksort</methodname></member>
+    <member><function>uasort</function></member>
    </simplelist>
   </para>
  </refsect1>
diff --git a/reference/spl/arrayobject/uksort.xml b/reference/spl/arrayobject/uksort.xml
index 1856bff2a1..3a7a6e09cb 100644
--- a/reference/spl/arrayobject/uksort.xml
+++ b/reference/spl/arrayobject/uksort.xml
@@ -15,6 +15,7 @@
    This function sorts the keys of the entries using a user-supplied
    comparison function. The key to entry correlations will be maintained.
   </para>
+  &note.sort-unstable;
  </refsect1>
 
  <refsect1 role="parameters">
@@ -25,16 +26,9 @@
      <term><parameter>callback</parameter></term>
      <listitem>
       <para>
-       The callback comparison function.
-      </para>
-      <para>
-       Function <parameter>callback</parameter> should accept two
-       parameters which will be filled by pairs of entry keys.
-       The comparison function must return an integer less than, equal
-       to, or greater than zero if the first argument is considered to
-       be respectively less than, equal to, or greater than the
-       second.
+       &return.callbacksort;
       </para>
+      &callback.cmp;
      </listitem>
     </varlistentry>
    </variablelist>
@@ -44,7 +38,7 @@
  <refsect1 role="returnvalues">
   &reftitle.returnvalues;
   <para>
-   &return.void;
+   &return.true.always;
   </para>
  </refsect1>
 
@@ -94,6 +88,7 @@ John: 1
     <member><methodname>ArrayObject::natsort</methodname></member>
     <member><methodname>ArrayObject::natcasesort</methodname></member>
     <member><methodname>ArrayObject::uasort</methodname></member>
+    <member><function>uksort</function></member>
    </simplelist>
   </para>
  </refsect1>