diff --git a/Doc/Manual/Php.html b/Doc/Manual/Php.html
index ed2587f1b..7c970d169 100644
--- a/Doc/Manual/Php.html
+++ b/Doc/Manual/Php.html
@@ -50,18 +50,21 @@
 
 
 <p>
-In this chapter, we discuss SWIG's support of PHP.  SWIG currently supports
-generating wrappers for PHP7 and PHP8.  Support for PHP5 was removed in SWIG
-4.0.0 and support for PHP4 was removed in SWIG 1.3.37.
+In this chapter, we discuss SWIG's support of PHP.  Currently any PHP7 or PHP8
+release should work.
 </p>
 
 <p>
-Currently any PHP7 or PHP8 release should work.
+Support for PHP7 was added in SWIG 3.0.11 and for PHP8 in 4.1.0.
+Support for PHP5 was removed in SWIG 4.0.0 and support for PHP4 was removed in
+SWIG 1.3.37.  There never was a PHP6 release.
+</p>
+
 </p>
 
 <p>
 In order to use this module, you will need to have a copy of the PHP
-include files to compile the SWIG generated files.  If you installed
+include files to compile the SWIG generated C/C++ sources.  If you installed
 PHP from a binary package, you may need to install a "php-dev" or "php-devel"
 package for these to be installed.  You can find out where these files are
 by running <tt>php-config --includes</tt>.  To use the built PHP module you