diff --git a/reference/array/functions/sort.xml b/reference/array/functions/sort.xml
index 8d1e776cea..8e22cec1de 100644
--- a/reference/array/functions/sort.xml
+++ b/reference/array/functions/sort.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.26 $ -->
-<refentry xml:id="function.sort" xmlns="http://docbook.org/ns/docbook">
+<!-- $Revision: 1.27 $ -->
+<refentry xml:id="function.sort" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
  <refnamediv>
   <refname>sort</refname>
   <refpurpose>Sort an array</refpurpose>
@@ -129,6 +129,13 @@ fruits[3] = orange
  <refsect1 role="notes">
   &reftitle.notes;
   &note.no-key-association;
+  <note>
+   <simpara>
+    Like most PHP sorting functions, <function>sort</function> uses an
+    implementation of <link
+    xlink:href="&url.wiki.quicksort;">Quicksort</link>.
+   </simpara>
+  </note>
   <warning>
    <simpara>
     Be careful when sorting arrays with mixed types values because