diff --git a/appendices/history.xml b/appendices/history.xml
index 01578442c4..e4f2767c0b 100644
--- a/appendices/history.xml
+++ b/appendices/history.xml
@@ -202,6 +202,66 @@
of millions of domains around the world.
+
+
+ PHP 6
+
+ The plan for PHP 6 was to feature deep support for Unicode in
+ the engine and language. This work was later abandoned, but other
+ features that had been targeted for PHP 6 were instead incorporated
+ into PHP 5.3 (namespaces)
+ and PHP 5.4 (trait,
+ "short" array syntax).
+
+
+
+
+ PHP 7
+
+ PHP 7.0 was released in 2015, and featured another major version of
+ the core, Zend Engine 3.0, which included
+ significant performance improvements (up to twice as fast as PHP
+ 5.6) and memory usage, consistent 64-bit support, improvements
+ to exceptions, a secure random number generator, the
+ null coalescing
+ operator (??), anonymous
+ classes, and other features.
+
+
+ Later releases of the PHP 7 series introduced more language features
+ such as the short list syntax (7.1),
+ object parameter and return type declaration (7.2), a new flexible
+ heredoc
+ and nowdoc
+ syntax (7.3), typed properties (7.4), and a new
+ foreign function interface (7.4).
+
+
+
+
+ PHP 8
+
+ First released in 2020, PHP 8.0 was another major update of the PHP
+ language. It contained many new features and optimizations including
+ named arguments,
+ union
+ types, attributes,
+ constructor
+ property promotion,
+ match
+ expressions, the nullsafe
+ operator (?->), a new optimizing JIT compiler,
+ and improvements in the type system, error handling, and consistency.
+
+
+ Later releases of the PHP 8 series introduced new language features
+ including enumerations (8.1),
+ fibers (8.1),
+ readonly classes (8.2),
+ Disjunctive Normal Form (DNF) Types (8.2), and typed class
+ constants (8.3).
+
+