diff --git a/reference/strings/functions/implode.xml b/reference/strings/functions/implode.xml
index a59d207d77..2a5af6d101 100644
--- a/reference/strings/functions/implode.xml
+++ b/reference/strings/functions/implode.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- $Revision$ -->
-<refentry xmlns="http://docbook.org/ns/docbook" xml:id="function.implode">
+<refentry xml:id="function.implode" xmlns="http://docbook.org/ns/docbook">
  <refnamediv>
   <refname>implode</refname>
   <refpurpose>Join array elements with a string</refpurpose>
@@ -17,17 +17,15 @@
    <type>string</type><methodname>implode</methodname>
    <methodparam><type>array</type><parameter>pieces</parameter></methodparam>
   </methodsynopsis>
+  <simpara>Legacy signature (deprecated as of PHP 7.4.0, removed as of PHP 8.0.0):</simpara>
+  <methodsynopsis>
+   <type>string</type><methodname>implode</methodname>
+   <methodparam><type>array</type><parameter>pieces</parameter></methodparam>
+   <methodparam><type>string</type><parameter>glue</parameter></methodparam>
+  </methodsynopsis>
   <para>
    Join array elements with a <parameter>glue</parameter> string.
   </para>
-  <note>
-   <para>
-    <function>implode</function> can, for historical reasons, accept
-    its parameters in either order. For consistency with
-    <function>explode</function>, however, it is <emphasis>deprecated</emphasis> not
-    to use the documented order of arguments.
-   </para>
-  </note>
  </refsect1>
 
  <refsect1 role="parameters">